Reason and experience both forbid us to expect that national morality can prevail in exclusion of religious principle.

The nature of God is a circle, of which the center is everywhere and the circumference is nowhere.

So long as one believes in God, one has the right to do the Good in order to be moral.

The Church says that the earth is flat, but I know that it is round, for I have seen the shadow on the moon, and I have more faith in the shadow than in the Church.

Religion! How it dominates man’s mind, how it humiliates and degrades his soul. God is everything, man is nothing, says religion. But out of that nothing God has created a kingdom so despotic, so tyrannical, so cruel, so terribly exacting that naught but gloom and tears and blood have ruled the world since gods began.

An irreligious man is not one who denies the gods of the majority, but one who applies to the gods the opinions of the majority. For what most men say about the gods are not ideas derived from sensation, but false opinions, according to which the greatest evils come to the wicked, and the greatest blessings come to the good from the gods.

God is a complex of ideas formed by the tribe, the nation, and humanity, which awake and organize social feelings and aim to link the individual to society and to bridle the zoological individualism.

One religion is as true as another.

The important thing, I think, is not to be bitter. You know, if it turns out that there is a God, I don’t think that he’s evil. I think that the worst thing you could say about him is that basically he’s an underachiever. After all, you know, there are worse things in life than death.

Religion is by no means a proper subject of conversation in mixed company.

Whatsoever is, is in God.

The freedom or immunity from coercion in matters religious, which is the endowment of persons as individuals, is also to be recognized as their right when they act in community. Religious communities are a requirement of the social nature both of man and of religion itself.

Kill a man, and you are an assassin. Kill millions of men, and you are a conqueror. Kill everyone, and you are a god.