A person who changes opinions, ideas, or behavior to suit the prevailing social climate; an opportunist. (PJC)

Personne qui change de conduite, d'opinion, de langage, au gré de l'intérêt. (Robert)

کنايه از شخص متلوّن‌المزاج است. آن که هر دم به رنگى درمى‌آيد. (کتاب کوچه - احمد شاملو، آيدا سرکيسيان)

For he had, as it was observed, this peculiar talent and artifice for gaining men's affections, that he could at once comply with and really embrace and enter into their habits and ways of life, and change faster than the chameleon. One colour, indeed, they say the chameleon cannot assume: it cannot itself appear white; but Alcibiades, whether with good men or with bad, could adapt himself to his company, and equally wear the appearance of virtue or vice. (Alcibiades)

زيرا چنان که ديديم، او استعداد و مهارت عجيبى، براى کسب خصلت‌هاى ديگران داشت، يعنى مى‌توانست، آنها را، به سرعت بپذيرد، و به راستى فرابگيرد، و طبق آداب و رسوم آنان زندگى کند، و سريع‌تر از بوقلمون، دگرگون شود. البته مى‌گويند رنگى هست، که بوقلمون نمى‌پذيرد: نمى‌تواند به رنگ سفيد درآيد؛ ولى آلکيبيادس مى‌توانست، خود را، با ياران خود، چه خوب باشند چه بد، تطبيق دهد، و رداى فضيلت و رذيلت را، به يکسان، دربرکند.

In the winter semester 1888-89 I was a medical student in Jena and attended the lecture and clinic of the famous psychiatrist Professor Otto Binswanger. One day—it must have been in January 1889—a patient who had recently been brought in was led into the classroom. Binswanger presented him to us as … Professor Nietzsche! Now one thinks that this would have caused a mighty uproar! Not a trace. Although as early as 1888 Georg Brandes had given lectures on him in Copenhagen, the name Nietzsche was practically unknown in Germany, not only to us clinicians in Jena but also to quite different people. There is a classical witness to this fact: Nietzsche is not to be found in the fourth edition of Meyers grosses Konversationslexikon from the year 1889. And how many small feathered creatures can be found there—and in the year 1889 Nietzsche's literary activity was finished forever. So Professor Binswanger should not be blamed if all he could tell us about Nietzsche's writing activity was that Nietzsche had formerly been active as a zealous Wagner-apostle but that he had in recent years become just as fanatical a Wagner-enemy, and that this change had perplexed his friends. I, for myself, when I heard the name Nietzsche, recalled having read it once in the writings of the outstanding Viennese music critic Eduard Hanslick, namely in an essay written in the year of the first Bayreuth Nibelungen festivals (1876), in which the Wagner literature of that time was examined critically. Two books which Nietzsche had in print at that time, belonging to this circle were: The Birth of Tragedy from the Spirit of Music and "Richard Wagner in Bayreuth." Hanslick dismissed them with a gesture of contempt and characterized the writer as a crazy philologist who really had no idea of music. At the time when he was brought into the Jena psychiatric clinic, Nietzsche was unknown to the German public, and it must well be the greatest irony of literary history that people were beginning to read his works precisely when he stopped writing: one or two years later Nietzsche was the great literary fashion.

But let us return to that Jena classroom. The man sitting before us did not at first sight have the external appearance of a sick man. He kept his figure, of middle height, in a stiff position; his face was haggard, but not exactly emaciated—his face, which a short time later the whole world knew from countless pictures: the magnificent forehead bordered by thick, plain, dark brown hair, the spirit-filled eyes under strong brows, the nose short as Bismarck's, and under it, also suggestive of Bismarck, the mustache that covered the beautifully matched lips, and to top the whole thing off, an unspeakably beautiful chin. The clothing simple, but clean and neat. However, the patient seemed to be having one of his good days: he was of clear consciousness and good memory-capacity. Professor Binswanger began a conversation with him about his former life. We learned to our astonishment that he had been a professor in Basel at just twenty-four years of age, even before receiving his doctorate, and that later persistent headaches had forced him to resign from his office. He did not say a word about his activities as a writer. Finally, as he reported, he had lived in Turin, and he began to praise this place, which had particularly suited him since it combined the advantages of the big city and the small town. This discussion made us all listen attentively, for we had never heard a man speak this way. And in Jena we were spoiled on this point, for teaching there at the same time were people like Ernst Haeckel, Rudolf Eucken, Otto Liebmann, Wilhelm Preyer, all not only famous scientists but also brilliant speakers. But this Basel professor emeritus was quite something else! Later, when I read Nietzsche's works it became clear to me what had startled me. I had just felt the magic power of the Nietzsche style for the first time. For he spoke as he wrote: short sentences full of peculiar word combinations and elaborate antitheses: even the scattered French and Italian expressions which he so loved, especially in his last writings, were not missing. His way of speaking had nothing of the lecturing professor about it. It was "conversation," and by the soft tone of the pleasant voice one recognized the man of best education. Unfortunately he did not finish his discussion. His thread broke off in the middle of a sentence and he sank into silence. Professor Binswanger then wanted to demonstrate a few disturbances in the patient's gait. He asked Nietzsche to walk back and forth in the room. But the patient did this so slowly and lazily that one could not perceive the phenomenon in question. "Now, professor," Binswanger said to him, "an old soldier like you will surely be able to march correctly!" This memory of his military time seemed to have a stimulating effect on him. His eyes lit up, his form straightened up, and he began to pace the room with a firm stride.

I subsequently saw Nietzsche quite often during visits to the patients' ward which our teacher used to make with us. His health varied: sometimes one saw him quiet and friendly, sometimes he had his bad days. When I saw him for the last time, he presented a different picture than the first time: he was in a highly excited state, and his consciousness was apparently troubled. He sat there with a strongly reddened face and eyes that flared up wildly and painfully, guarded by a keeper. On the whole, however, institutional treatment had a favorable effect on him. He calmed down and could for a time be left in the care of his mother and sister, who took him to their home in Naumburg.

—Simchowitz, S. "Der sieche Dionysos: Eine persِnliche Erinnerung," Kِlnische Zeitung, August 29, 1925, from Conversations with Nietzsche: A Life in the Words of His Contemporaries (Oxford Univ. Press, 1987), pp. 222-225.

What Is Existentialism? - Walter Kaufmann
Excerpted from "Existentialism from Dostoevsky to Sartre", The World Publishing Company, 1956

Existentialism is not a philosophy but a label for several widely different revolts against traditional philosophy. Most of the living "existentialists" have repudiated this label, and a bewildered outsider might well conclude that the only thing they have in common is a marked aversion for each other. To add to the confusion, many writers of the past have frequently been hailed as members of this movement, and it is extremely doubtful whether they would have appreciated the company to which they are consigned. In view of this, it might be argued that the label "existentialism" ought to be abandoned altogether.

Certainly, existentialism is not a school of thought nor reducible to any set of tenets. The Three writers who appear invariably on every list of "existentialists" - Jaspers, Heidegger, and Sartre - are not in agreement on essentials. Such alleged precursors as Pascal and Kierkegaard differed from all three men by being dedicated Christians; and Pascal was a Catholic of sorts while Kierkegaard was a Protestant's Protestant. If, as it is often done, Nietzsche and Dostoevsky are included in the fold, we must make room for an impassioned anti-Christian and a even more fanatical Greek-Orthodox Russian imperialist, By the time we consider adding Rilke, Kafka, and Camus, it becomes plain that one essential feature shared by all these men is their perfervid individualism.

Heidegger the Fox - Hannah Arendt

Heidegger says, with great pride: "People say that Heidegger is a fox." This is the true story of Heidegger the fox: Once upon a time there was a fox who was so lacking in slyness that he not only kept getting caught in traps but couldn't even tell the difference between a trap and a non-trap. This fox suffered from another failing as well. There was something wrong with his fur, so that he was completely without natural protection against the hardships of a fox's life. After he had spent his entire youth prowling around the traps of people, and now that not one intact piece of fur, so to speak, was left on him, this fox decided to withdraw from the fox world altogether and to set about making himself a burrow. In his shocking ignorance of the difference between traps, he hit on an idea completely new and unheard of among foxes: He built a trap as his burrow. He set himself inside it, passed it off as a normal burrow—not out of cunning, but because he had always thought others' traps were their burrows—and then decided to become sly in his own way and outfit for others the trap he had built himself and that suited only him. This again demonstrated great ignorance about traps: No one would go into his trap, because he was sitting inside it himself. This annoyed him. After all, everyone knows that, despite their slyness, all foxes occasionally get caught in traps. Why should a fox trap—especially one built by a fox with more experience of traps than any other—not be a match for the traps of human beings and hunters? Obviously because this trap did not reveal itself clearly enough as the trap it was! And so it occurred to our fox to decorate his trap beautifully and to hang up equivocal signs everywhere on it that quite clearly said: "Come here, everyone; this is a trap, the most beautiful trap in the world." From this point on it was clear that no fox could stray into this trap by mistake. Nevertheless, many came. For this trap was our fox's burrow, and if you wanted to visit him where he was at home, you had to step into his trap. Everyone except our fox could, of course, step out of it again. It was cut, literally, to his own measurement. But the fox who lived in the trap said proudly: "So many are visiting me in my trap that I have become the best of all foxes." And there is some truth in that, too: Nobody knows the nature of traps better than one who sits in a trap his whole life long.