The heart of a fool is in his mouth, but the mouth of a wise man is in his heart.

When men differ in opinion, both sides ought equally to have the advantage of being heard by the public; when Truth and Error have fair play, the former is always an overmatch for the latter.

There never was a truly great man that was not at the same time truly virtuous.

That which resembles most living one's life over again, seems to be to recall all the circumstances of it; and, to render this remembrance more durable, to record them in writing.

No employment can be managed without arithmetic, no mechanical invention without geometry.

There is always room for the man of force.

Idle hands are the devil's playthings.