1908-1911  MANCHESTER 

Ludwig 1908, © Fam. Sjögren, Forschungsinstitut Brenner Archiv 

Wittgenstein moved to Manchester in May 1908, after three semesters studying mechanical engineering at the Technical High School Charlottenburg (1906-1908). As a rather informal research student at the university, he was involved in experiments and research on aeronautics until 1911.

1911 FIRST VISIT TO GOTTLOB FREGE IN JENA

I wrote to Frege putting forward some objections to his theories, and waited anxiously for a reply. To my great pleasure, Frege wrote and asked me to come and see him. When I arrived I saw a row of boys’ school caps and heard a noise of boys playing in the garden. Frege, I learned later, had had a sad married life – his children had died young, and then his wife; he had an adopted son, to whom I believe he was a kind and good father. I was shown into Frege’s study. Frege was a small neat man with a pointed beard, who bounced around the room as he talked. He absolutely wiped the floor with me, and I felt very depressed; but at the end he said “You must come again”, so I cheered up. I had several discussions with him after that. Frege would never talk about anything but logic and mathematics; if I started on some other subject, he would say something polite and then plunge back into logic and mathematics. He once showed me an obituary of a colleague, who, it was said, never used a word without knowing what it meant; he expressed astonishment that a man should be praised for this! The last time I saw Frege, as we were waiting at the station for my train, I said to him “Don’t you ever find any difficulty in your theory that numbers are objects?! He replied “Sometimes I seem to see a difficulty – but then again I don’t see it.”

Ludwig Wittgenstein in a personal communication to Peter Geach

Courtesy Brian McGuinness, Young Ludwig, 1988

1911-1912  CAMBRIDGE 

 

We expect the next big step in philosophy to be taken by your brother.

Bertrand Russell to Ludwig’s sister Hermine Wittgenstein

Trinity College Cambridge, 1911, © Wittgenstein Initiative 

Betrand Russell, © Wikimedia 

At the end of his first term at Cambridge he came to me and said: “Will you please tell me whether I am a complete idiot or not? … Because, if I am a complete idiot, I shall become an aeronaut; but, if not, I shall become a philosopher.” I told him to write me something during the vacation on some philosophical subject … . At the beginning of the following term he brought me the fulfilment of this suggestion. After reading only one sentence, I said to him: “No, you must not become an aeronaut.”

Bertrand Russell: Last Philosophical Testament 

Wittgenstein 1913 – 1914

Wittgenstein designed the house in the spring of 1914, for his next stay in Skjolden. In the meantime, World War I…

Wittgenstein 1914 and 1915

God be with me!
Wartime Diaries

Wittgenstein 1918 and 1919

I‘ve written a book called „Logisch-Philosophische Abhandlung“ containing all my work of the last 6 years.

Wittgenstein 1920 to 1922

… My work consists of two parts: of the one which is here, and of everything which I have not written. And precisely this second
part is the important one.

Wittgenstein Tractatus

The Tractatus Logico-Philosophicus exerted a great influence on various philosophical schools, but especially on the Vienna Circle. Among the members of this circle were