The first forty years of life give us the text; the next thirty supply the commentary on it.

Because Christian morality leaves animals out of account, they are at once outlawed in philosophical morals; they are mere 'things,' mere means to any ends whatsoever. They can therefore be used for vivisection, hunting, coursing, bullfights, and horse racing, and can be whipped to death as they struggle along with heavy carts of stone. Shame on such a morality that is worthy of pariahs, and that fails to recognize the eternal essence that exists in every living thing, and shines forth with inscrutable significance from all eyes that see the sun!

The memory should be specially taxed in youth, since it is then that it is strongest and most tenacious. But in choosing the things that should be committed to memory the utmost are and forethought must be exercised; as lessons well learnt in youth are never forgotten.

All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident.

Pride works from within; it is the direct appreciation of oneself.

Necessity is the constant scourge of the lower classes, ennui of the higher ones.

Solitude will be welcomed or endured or avoided, according as a man's personal value is large or small.