There is nothing to which men, while they have food and drink, cannot reconcile themselves.
Advertising is the modern substitute for argument; its function is to make the worse appear the better.
The highest form of vanity is love of fame.
The tide of evolution carries everything before it, thoughts no less than bodies, and persons no less than nations
My atheism, like that of Spinoza, is true piety towards the universe and denies only gods fashioned by men in their own image, to be servants of their human interests.
The Soul is the voice of the body's interests.
Love is only half the illusion; the lover, but not his love, is deceived.
The hunger for facile wisdom is the root of all false philosophy.
Nothing can be meaner than the anxiety to live on, to live on anyhow and in any shape
Words are weapons, and it is dangerous . . . to borrow them from the arsenal of the enemy.
Skepticism, like chastity, should not be relinquished too readily.
The little word is has its tragedies; it marries and identifies different things with the greatest innocence; and yet no two are ever identical, and if therein lies the charm of wedding them and calling them one, therein too lies the danger. Whenever I use the word is, except in sheer tautology, I deeply misuse it; and when I discover my error, the world seems to fall asunder and the members of my family no longer know one another.
Sanity is a madness put to good uses; waking life is a dream controlled.
Oaths are the fossils of piety.
Knowledge of what is possible is the beginning of happiness.