It is completely unimportant. That is why it is so interesting.

The human mind prefers to be spoon-fed with the thoughts of others, but deprived of such nourishment it will, reluctantly, begin to think for itself - and such thinking, remember, is original thinking and may have valuable results.

I am not one to rely upon the expert procedure. It is the psychology I seek, not the fingerprint or the cigarette ash.

Our weapon is our knowledge. But remember, it may be a knowledge we may not know that we possess.

There is nothing more thrilling in this world, I think, than having a child that is yours, and yet is mysteriously a stranger.

The whole thing was like a nine-month ocean voyage to which you never got acclimatized.

The tragedy of life is that people do not change.