Any piece of knowledge I acquire today has a value at this moment exactly proportional to my skill to deal with it. Tomorrow, when I know more, I recall that piece of knowledge and use it better.

A classic is a book that remains in print

Nothing in man is more serious than his sense of humor; it is the sign that he wants all the truth.

If you look around the table and you can't tell who the sucker is, it's you.

Memory performs the impossible for man by the strength of his divine arms; holds together past and present, beholding both, existing in both, abides in the flowing, and gives continuity and dignity to human life.

An unexamined idea, to paraphrase Socrates, is not worth having and a society whose ideas are never explored for possible error may eventually find its foundations insecure.

To be what no one ever was, to be what everyone has been: Freedom is the mean of those extremes that fence all effort in.