One of the painful things about our time is that those who feel certainty are stupid, and those with any imagination and understanding are filled with doubt and indecision.

One's work is never so bad as it appears on bad days, nor so good as it appears on good days.

Love and knowledge led upwards to the heavens.

All the labor of all the ages, all the devotion, all the inspiration, all the noonday brightness of human genius are destined to extinction. So now, my friends, if that is true, and it is true, what is the point?

Philosophy is an unusually ingenious attempt to think fallaciously.

Americans need rest, but do not know it. I believe this to be a large part of the explanation of the crime wave in the United States.

Many a man will have the courage to die gallantly, but will not have the courage to say, or even to think, that the cause for which he is asked to die is an unworthy one.