Knowledge of human nature is the beginning and end...

The progress of evolution from President Washington to President Grant was alone evidence to upset Darwin.

I am an anarchist in politics and an impressionist in art as well as a symbolist in literature. Not that I understand what these terms mean, but I take them to be all merely synonyms of pessimist.

Nothing in education is so astonishing as the amount of ignorance it accumulates in the form of inert facts.

Age is an issue of mind over matter. If you don't mind, it doesn't matter.

Common sense is the collection of prejudices acquired by age eighteen.

Education is the best provision for old age.

Why should society feel responsible only for the education of children, and not for the education of all adults of every age?

The really frightening thing about middle age is the knowledge that you'll grow out of it.

If repression has indeed been the fundamental link between power, knowledge, and sexuality since the classical age, it stands to reason that we will not be able to free ourselves from it except at a considerable cost.

We are approaching a new age of synthesis. Knowledge cannot be merely a degree or a skill... it demands a broader vision, capabilities in critical thinking and logical deduction without which we cannot have constructive progress.

We live in an age of instant knowledge. And there's almost a sense of entitlement to that.