The public, with its mob yearning to be instructed, edified and pulled by the nose, demands certainties; it must be told definitely and a bit raucously that this is true and that is false. But there are no certainties.

Don't tell me what delusion he entertains regarding God, or what mountebank he follows in politics, or what he springs from, or what he submits to from his wife. Simply tell me how he makes his living. It is the safest and surest of all known tests. A man who gets his board and lodging on this ball in an ignominious way is inevitably an ignominious man.

All [zoos] actually offer to the public in return for the taxes spent upon them is a form of idle and witless amusement, compared to which a visit to a penitentiary, or even to a State legislature in session, is informing, stimulating and ennobling.

The fundamental trouble with marriage is that it shakes a man's confidence in himself, and so greatly diminishes his general competence and effectiveness. His habit of mind becomes that of a commander who has lost a decisive and calamitous battle. He quite trusts himself thereafter.

A man's women folk, whatever their outward show of respect for his merit and authority, always regard him secretly as an ass, and with something akin to pity.

There is something even more valuable to civilization than wisdom, and that is character.

Morality is doing what is right, no matter what you are told. Religion is doing what you are told, no matter what is right.