“Science is the most durable and nondivisive way of thinking about the human circumstance. It transcends cultural, national, and political boundaries. You don’t have American science versus Canadian science versus Japanese science.”

Some propositions are so dangerous that it may even be ethical to kill people for believing them.

The atheist, by merely being in touch with reality, appears shamefully out of touch with the fantasy life of his neighbors.

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?

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

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 only way you can know where the line is, is if you cross it.

Everyone has ocean’s to fly, if they have the heart to do it. Is it reckless? Maybe. But what do dreams know of boundaries?

Divorce: a resumption of diplomatic relations and rectification of boundaries.

I teach in the medical school, the School of Public Health, the Kennedy School of Government, and the Business School. And it’s the best perch… because most of my work crosses boundaries.

Children need boundaries, so they can know how far they have to go to get beyond them.

Like music and art, love of nature is a common language that can transcend political or social boundaries.

I have found that you have only to take that one step toward the gods, and they will then take ten steps toward you. That step, the heroic first step of the journey, is out of, or over the edge of, your boundaries, and it often must be taken before you know that you will.

All the jazz guys had interracial relationships, and even the ladies did. Over the years, interracial relationships have been a hip, almost defiant thing, a way of saying “Nobody can put a boundary around me.”