If I work incessantly to the last, nature owes me another form of existence when the present one collapses.

Self-knowledge comes from knowing other men.

Art is long, life short, judgment difficult, opportunity transient. To act is easy, to think is hard; to act according to our thought is troublesome. Every beginning is cheerful: the threshold is the place of expectation.

A great deal may be done by severity, more by love, but most by clear discernment and impartial justice.

The human mind will not be confined to any limits.

Mathematics can remove no prejudices and soften no obduracy. It has no influence in sweetening the bitter strife of parties, and in the moral world generally its action is perfectly null.

Power is neither male nor female.