May we not return to those scoundrels of old, the illustrious founders of superstition and fanaticism, who first took the knife from the altar to make victims of those who refused to be their disciples?

A single part of physics occupies the lives of many men, and often leaves them dying in uncertainty.

The secret of being a bore is to tell everything.

Use, do not abuse; as the wise man commands. I flee Epictetus and Petronius alike. Neither abstinence nor excess ever renders man happy.

It is the privilege of true genius, and certainly of the genius that opens a new road, to make without punishment great mistakes.

Love truth, but pardon error.

Every sensible man, every honorable man, must hold the Christian sect in horror.

Paradise on earth is where I am.

The superfluous, a very necessary thing. 

All styles are good except the boring kind.