We haven't met since 11 years. I don't know if you have changed during that time, but I certainly have tremendously. I am sorry to say I am no better than I was, but I am different. And therefore if we shall meet you may find that the man who has come to see you isn't really the one you meant to invite. There is no doubt that, even if we can make ourselves understood to one another, a chat or two will not be sufficient for the purpose, and that the result of our meeting will be disappointment and disgust on your side and disgust and despair on mine.

Wittgenstein in a letter to Keynes