Those who have been eminent in philosophy, politics, poetry, and the arts have all had tendencies toward melancholia.

The complete man must work, study and wrestle.

The ridiculous is produced by any defect that is unattended by pain, or fatal consequences; thus, an ugly and deformed countenance does not fail to cause laughter, if it is not occasioned by pain.

Metaphysics involves intuitive knowledge of unprovable starting-points concepts and truth and demonstrative knowledge of what follows from them.

Therefore, the good of man must be the end of the science of politics.

... the science we are after is not about mathematicals either none of them, you see, is separable.

The ideal man takes joy in doing favors for others.