Quotes About Rationality

Man, once surrendering his reason, has no remaining guard against absurdities the most monstrous. . . .

We shouldn't even need the word 'atheism'. If people didn't invent ridiculous imaginary gods, rational people wouldn't have to deny them.

Skepticism rather than credulity is the highest principle that the human intellect can use to ennoble our existence.

Nothing can be more contrary to religion and the clergy than reason and common sense.

Superstition is an enemy to civil liberty.

to rest one's case on faith means to concede that reason is on the side of one's enemies- that one has no rational arguments to offer.

You cannot be both sane and well educated and disbelieve in evolution. The evidence is so strong that any sane, educated person has got to believe in evolution.

At first sight, one does not see what relations there can be between religion and logic.

Celebrating faith over reason is merely a way of denying what is, in favor of embracing any whim that strikes your fancy.

Religion makes intelligent people say and do wacky things, believe and affirm crazy things.

I believe I have a healthy common sense and therefore have no need for religion.

It is conceivable that religion may be morally useful without being intellectually sustainable.

I am an intransigent atheist, though not a militant one. This means that I am not fighting against religion - I am fighting for reason.

The first was a government of priestcraft, the second of conquerors, and the third of reason.

This is why rational people - anti-religionists - must end their timidity and come out of their closet and assert themselves.

Trying to defend religion by invoking science is like claiming that three plus four equals ice cream.

My religious superstition gave place to rational ideas based on scientific facts, and in proportion as I looked at everything from a new standpoint, I grew more happy day by day.

The main point of enlightenment is man's release from his self-caused immaturity, primarily in matters of religion.

There is no society in human history that ever suffered because its people became too reasonable.

Reason is the presupposition of faith, and faith is the fulfillment of reason.

All atheists must examine the Non Aggression Principle.

To believe something in the face of evidence and against reason - to believe something by faith - is ignoble, irresponsible and ignorant, and merits the opposite of respect.

nobody ever said smart people had to be sane, and nobody ever said that intelligence has to be paired with wisdom.

Vengeance mixed with stupidity did not for sanity or safety make.