Don't worry about anything. Go out and have a good time.

Everybody who reasons carefully about anything is making a contribution ... and if you abstract it away and send it to the Department of Mathematics they put it in books.

For those who want some proof that physicists are human, the proof is in the idiocy of all the different units which they use for measuring energy.

If all of this, all the life of a stream of water, can be nothing but a pile of atoms, how much more is possible?

Tell your son to stop trying to fill your head with science - for to fill your heart with love is enough!

But there is nothing in biology yet found that indicates the inevitability of death.

By honest I don't mean that you only tell what's true. But you make clear the entire situation. You make clear all the information that is required for somebody else who is intelligent to make up their mind.