Natural justice is a compact resulting from expediency by which men seek to prevent one man from injuring others and to protect him from being injured by them.

It is impossible to live a pleasant life without living wisely and honorably and justly, and it is impossible to live wisely and honorably and justly without living pleasantly. Whenever any one of these is lacking, when, for instance, the man is not able to live wisely, though he lives honorably and justly, it is impossible for him to live a pleasant life.

The fool, with all his other faults, has this also, he is always getting ready to live.

There are infinite worlds both like and unlike this world of ours. For the atoms being infinite in number... are borne on far out into space.

Haec ego non multis (scribo), sed tibi: satis enim magnum alter alteri theatrum sumus. I am writing this not to many, but to you: certainly we are a great enough audience for each other.

Happiness is man's greatest aim in life. Tranquility and rationality are the cornerstones of happiness.

Virtue consisteth of three parts,--temperance, fortitude, and justice.