私は,1900年7月に,彼とパリで昼食を共にしたことを記憶しているが,その日は,酷く暑かった。ホワイトヘッド夫人は心臓が弱かったが,彼女は(暑さで)気を失い,彼が(気付け薬の)'炭酸アンモニウム'(sal volatile)を買いに行っている間に,誰かが窓を開けた。彼が戻って来て,「空気はいいが,風(←空気の流れ)はよくない(De l'air, oui, mais pas de courant d'air)」と言いながら,再び窓をしっかりと閉めた。 私はまた,彼が,1905年に,パリのホテルに泊まっていた私に会いに来てくれたことを記憶している。その時,(クロムプトン・デービス及びセオドール・デービスの父親)デービス氏とその娘のマーガレットが,彼の話に耳をかたむけていた。彼は,かたときもやすまずに30分もの間,しゃべり続けこう言った--「賢い人とは,黙っている人のことである。」--。その瞬間,デーヴィス氏は,80歳の老齢にもかかわらず突如として部屋から飛び出した。そうして彼が姿を消すと同時に,彼の笑い声が私に聞こえてきた(右欄イラスト出典:B. Russell's The Good Citizen's Alphabet, 1953.)。 クーチュラは,一時期,私の数理論理学の種々のアイデア(思想・見解)の非常に熱心な擁護者であったが,いつも非常に思慮深いというわけではなかった。そういうわけで,私のポアンカレ(Jules-Henri Poincare, 1854-1912)との長い論争において,自分自身だけでなく,クーチュラをも弁護しなけれぱならないということは,時々,かなり重荷となった。彼の最も価値のある著作は,ライプニッツ(Gottfried Wilhelm Leibniz, 1646-1716)の論理学に関するものであった。ライプニッツは,良く思われたいと望んだ。そこで彼は,二流の著作しか出版しなかった。彼の最良・最高の著作はすべて原稿のままであった。(ライプニッツ死後)彼の著作を扱った編集者たちも,自分たちが最良・最高と考えたものだけを出版し,彼の最良・最高の著作は印刷に付されないままにされた。クーチュラは,ライプニッツの最高の著作を発掘し,世に紹介した最初の人であった。私は当然のごとく嬉しく思った。なぜなら,クーチュラの著作がなかったら不十分なままであったであろう(弱い)根拠のもとで,ライプニッツに関する自分の著書A Critical Exposition of the Philosophy of Leibniz, 1900)の中で採用したライプニッツ解釈を支持する証拠資料を,クーチュラの著書が提供してくれたからである。私が最初に彼と会った時,彼は「スポーツ」と名のつくものはいかなるものもやらないと私に言った。その後,しばらくたってから,彼に,自転車に乗るかどうかを尋ねると,彼は,次のように応えた。「いいえ乗りません。私はスポーツマンではありませんから。」 私は,長年にわたって彼と文通を続けた。そうしてボーア戦争(Boer War)の初期に,帝国主義的な論調の手紙を彼に書き送ったが,現在では,そのような手紙を書いて送ったことについて,私は大変後悔している。
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Of the year 1897 I remember very little except that my Foundations of Geometry was published in that year. I remember also very great pleasure in receiving a letter of praise of this book from Louis Couturat, whom at that time I had never met, though I had reviewed his book The Mathematical Infinite. I had dreamed of receiving letters of praise from unknown foreigners, but this was the first time it had happened to me. He related how he had worked his way through my book 'arme d'un dictiounaire', for he knew no English. At a slightly later date I went to Caen to visit him, as he was at that time a professor there. He was surprised to find me so young, but in spite of that a friendship began which lasted until he was killed by a lorry during the mobilisation of 1914. In the last years I had lost contact with him, because he became absorbed in the question of an international language. He advocated Ido rather than Esperanto. According to his conversation, no human beings in the whole previous history of the human race had ever been quite so depraved as the Esperantists. He lamented that the word Ido did not lend itself to the formation of a word similar to Espeantist. I suggested 'idiot', but he was not quite pleased. I remember lunching with him in Paris in July 1900, when the heat was very oppressive. Mrs Whitehead, who had a weak heart, fainted, and while he was gone to fetch the sal volatile somebody opened the window. When he returned, he firmly shut it again, saying: 'De l'air, oui, mais pas de courant d'air.' I remember too his coming to see me in a hotel in Paris in 1905, while Mr Davies and his daughter Margaret (the father and sister of Crompton and Theodore) listened to his conversation. He talked without a moment's intermission for half an hour, and then remarked that 'the wise are those who hold their tongues'. At this point, Mr Davies, in spite of his eighty years, rushed from the room, and I could just hear the sound of his laughter as he disappeared. Couturat was for a time a very ardent advocate of my ideas on mathematical logic, but he was not always very prudent, and in my long duel with Poincare I found it sometimes something of a burden to have to defend Couturat as well as myself. His most valuable work was on Leibniz's logic. Leibniz wished to be thought well of, so he published only his second-rate work. All his best work remained in manuscript. Subsequent editors, publishing only what they thought best, continued to leave his best work unprinted. Couturat was the first man who unearthed it. I was naturally pleased, as it afforded documentary evidence for the interpretation of Leibniz which I had adopted in my book about him on grounds that, without Couturat's work, would have remained inadequate. The first time I met Couturat he explained to me that he did not practise any branch of '1e sport'. When shortly afterwards I asked him if he rode a bicycle, he replied : 'But no, since I am not a sportsman.' I corresponded with him for many years, and during the early stages of the Boer War wrote him imperialistic letters which I now consider very regrettable.
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