The aim of the wise is not to secure pleasure, but to avoid pain.

Philosophy begins with wonder.

In poverty and other misfortunes of life, true friends are a sure refuge.

All paid jobs absorb and degrade the mind.

All men by nature desire knowledge.

Happiness is a certain activity of soul in conformity with perfect goodness

But nature flies from the infinite; for the infinite is imperfect, and nature always seeks an end.