The surest way of concealing from others the boundaries of one s own knowledge is not to overstep them.

He who doubts, knows - knows as much as can be known.

Since the world never faults a man who refuses to yield...it is generally recognized that weak men live in obedience to the world's will, while the strong obey only their own.

I find it awfully difficult to determine if the habit of talking about oneself at length runs contrary to the basic rules of propriety, or if instead the man exempt from this vice is rare.

Man is almost always as wicked as his needs require.

It's interesting to observe that almost all truly worthy men have simple manners, and that simple manners are almost always taken as a sign of little worth

Ignorance is the greatest source of happiness.