those who attack always do so with greater fervor than those who defend.

I once had a rose named after me and I was very flattered. But I was not pleased to read the description in the catalogue: no good in a bed, but fine up against a wall.

You can't move so fast that you try to change the mores faster than people can accept it. That doesn't mean you do nothing, but it means that you do the things that need to be done according to priority.

What we must learn to do is to create unbreakable bonds between the sciences and the humanities. We cannot procrastinate. The world of the future is in our making. Tomorrow is now.

Develop a skin as thick as a rhinoceros hide!

practically nothing we do ever stands by itself. If it is good, it will serve some good purpose in the future. If it is evil, it may haunt us and handicap our efforts in unimagined ways.

Will people ever be wise enough to refuse to follow bad leaders or to take away the freedom of other people?