Distrust even Mathematics; albeit so sublime and highly perfected, we have here a machine of such delicacy it can only work in vacuo, and one grain of sand in the wheels is enough to put everything out of gear. One shudders to think to what disaster such a grain of sand may bring a Mathematical brain. Remember Pascal.

When a thing has been said and well, have no scruple. Take it and copy it.

It is the certainty that they possess the truth that makes men cruel.

Unhappiness does make people look stupid.

People who don't count won't count.

Man is a rational animal. He can think up a reason for anything he wants to believe.

We live between two dense clouds; the forgetting of what was and the uncertainty of what will be.