Teach him a certain refinement in sorting out and selecting his arguments, with an affection for relevance and so for brevity. Above all let him be taught to throw down his arms and surrender to truth as soon as he perceives it, whether the truth is born at his rival's doing or within himself from some change in his ideas.

Arts and sciences are not cast in a mould, but are found and perfected by degrees, by often handling and polishing.

In plain Truth, it is no Want, but rather Abundance that creates Avarice.

Seeing that the Senses cannot decide our dispute, being themselves full of uncertainty, we must have recourse to Reason; there is no reason but must be built upon another reason: so here we are retreating backwards to infinity.

My art and profession is to live.

No two men ever judged alike of the same thing, and it is impossible to find two opinions exactly similar, not only in different men but in the same men at different times.

To die is not to play a part in society; it is the act of a single person. Let us live and laugh among our friends; let us die and sulk among strangers.