I've found that the chief difficulty for most people was to realize that they had really heard new things: that is things that they had never heard before. They kept translating what they heard into their habitual language. They had ceased to hope and believe there might be anything new.

There is no possibility of remembering what has been found and understood, and later repeating it to oneself. It disappears as a dream disappears. Perhaps it is all nothing but a dream.

When one realises one is asleep, at that moment one is already half-awake.

A religion contradicting science and a science contradicting religion are equally false.

When I came to Harvard I had a specific plan which included overhauling the system here.

There's a difference between early and late abortions. If you have a late abortion, where the fetus might feel pain, then I think you should have a good reason. Because then you're inflicting pain. As you go through the third trimester, you need to have more serious reasons to end a pregnancy.