Instead of establishing facts, we have to overthrow errors; instead of ascertaining what is, we have to chase from our imaginations what is not..

Opinions are not to be learned by rote, like the letters of an alphabet, or the words of a dictionary. They are conclusions to be formed, and formed ….

The knowledge of one generation is the ignorance of the next..

The world is full of religion, and full of misery and crime..

Pets, like their owners, tend to expand a little over the Christmas period..

Equality! Where is it, if not in education? Equal rights! They cannot exist without equality of instruction..

the mode of delivering a truth makes, for the most part, as much impression on the mind of the listener as the truth itself..

I am neither Jew nor Gentile, Mohammedan nor Theist; I am but a member of the human family, and would accept of truth by whomsoever offered -- that t….

... a nation to be strong, must be united; to be united, must be equal in condition; to be equal in condition, must be similar inhabits and feeling; ….

it is not that religion is merely useless, it is mischievous. It is mischievous by its idle terrors; it is mischievous by its false morality; it is m….

... so far from entrenching human conduct within the gentle barriers of peace and love, religion has ever been, and now is, the deepest source of con….

Turn your churches into halls of science, and devote your leisure day to the study of your own bodies, the analysis of your own minds, and the examin….

These will vary in every human being; but knowledge is the same for every mind, and every mind may and ought to be trained to receive it..

Moral truth, resting entirely upon the ascertained consequences of actions, supposes a process of observation and reasoning..

Religion may be defined thus: a belief in, and homage rendered to, existences unseen and causes unknown..

Trust me, there are as many ways of living as there are men, and one is no more fit to lead another, than a bird to lead a fish, or a fish a quadrupe….

Credulity is always a ridiculous, often a dangerous failing: it has made of many a clever man, a fool; and of many a good man, a knave..

Do not confound noise with fame. The man who is remembered, is not always honored..

Equality is the soul of liberty; there is, in fact, no liberty without it..

Be not afraid! In admitting a creator, refuse not to examine his creation; and take not the assertions of creatures like yourselves, in place of the ….

All that I say is, examine, inquire. Look into the nature of things. Search out the grounds of your opinions, the for and against. Know why you belie….