“People who harbor strong convictions without evidence belong at the margins of our societies, not in our halls of power.”

Religious faith obscures uncertainty where uncertainty exists, allowing the unknown, the implausible, and the false to achieve primacy over the facts.

Atheism is nothing more than the noises reasonable people make when in the presence of religious dogma.

What would our world be like if we ceased to worry about ‘right’ and ‘wrong,’ or ‘good’ and ‘evil,’ and simply acted so as to maximize well-being, our own and that of others? Would we lose anything important?

Man is manifestly not the measure of all things. This universe is shot through with mystery. The very fact of its being, and of our own, is a mystery absolute, and the only miracle worthy of the name.

What we do in every other area of our lives (other than religion), is, rather than respect somebody’s beliefs, we evaluate their reasons.

The core of science is not a mathematical modeling–it is intellectual honesty. It is a willingness to have our certainties about the world constrained by good evidence and good argument.

Atheism is not a philosophy; it is not even a view of the world; it is simply a refusal to deny the obvious. Unfortunately, we live in a world in which the obvious is overlooked as a matter of principle.

The faith of religion is belief on insufficient evidence.

How we pay attention to the present moment…determin es the character of our experience and…the quality of our lives.

The truth that we must finally confront is that Islam contains specific notions of martyrdom and jihad that fully explain the character of Muslim violence.

False encouragement is a kind of theft: it steals time, energy, and motivation a person could put toward some other purpose.

Let me assure you that my intent is not to offend or merely be provocative. I’m simply worried.

Either our wills are determined by prior causes and we are not responsible for them, or they are the product of chance and we are not responsible for them.

The power of psychedelics is that they often reveal, in the span of a few hours, depths of awe and understanding that can otherwise elude us for a lifetime.

This is the true horror of religion. It allows perfectly decent and sane people to believe by the billions, what only lunatics could believe on their own.

It is difficult to imagine a set of beliefs more suggestive of mental illness than those that lie at the heart of many of our religious traditions.

Politics is not religion and we should govern on the basis of evidence, not theology.

I call upon you to draw from the depths of your being – to prove that we are a human race, to prove that our love outweighs our need to hate, that our compassion is more compelling than our need to blame.

Scientific knowledge scarcely exists amongst the higher classes of society. The discussion in the Houses of Lords or of Commons, which arise on the occurrence of any subjects connected with science, sufficiently prove this fact.

They have found absolutely nothing to connect us with the Communist Party of the United States. In regards to your question about whether I myself am a communist, as I said I do not belong to any other organization.

A final proof of our ideas can only be obtained by detailed studies on the alterations produced in the amino acid sequence of a protein by mutations of the type discussed here.

Your existence is evidence that this generation needs something that your life contains.

No evidence compels the conclusion that the minimum required intake of any vitamin comes close to the optimum intake that sustains good health.

A rich man without charity is a rogue; and perhaps it would be no difficult matter to prove that he is also a fool.