Thought must be divided against itself before it can come to any knowledge of itself.

It is a bit embarrassing to have been concerned with the human problem all one's life and find at the end that one has no more to offer by way of advice than 'try to be a little kinder.'

You should hurry up and acquire the cigar habit. It's one of the major happinesses. And so much more lasting than love, so much less costly in emotional wear and tear.

There isn't any formula or method. You learn to love by loving - by paying attention and doing what one thereby discovers has to be done.

The impulse to cruelty is, in many people, almost as violent as the impulse to sexual love - almost as violent and much more mischievous.