What sort of philosophers are we, who know absolutely nothing of the origin and destiny of cats?

To know that we know what we know and that we do not know what we do not know that is true knowledge.

Our life is frittered away by detail...Simplicity, simplicity, simplicity! I say, let our affairs be as two or three, and not a hundred or a thousand...Simplify, simplify!

Most men are satisfied if they read or hear read, and perchance have been convicted by the wisdom of one good book, the Bible, and for the rest of their lives vegetate and dissipate their faculties in what is called easy reading.

What are these pines & these birds about? What is this pond a-doing? I must know a little more.

I thus found that the student who wishes for a shelter can obtain one for a lifetime at an expense not greater than the rent which he now pays annually. If I seem to boast more than is becoming, my excuse is that I brag for humanity rather than for myself; and my shortcomings and inconsistencies do not affect the truth of my statement.