192 Quotes by Lawrence M. Krauss

The universe is the way it is, whether we like it or not.

I hope that every [person] at one point in their life has the opportunity to have something that is at the heart of their being, something so central to their being that if they lose it they won't feel they're human anymore, to be proved wrong because that's the liberation that science provides. The realization that to assume the truth, to assume the answer before you ask the questions leads you nowhere.

A truly open mind means forcing our imaginations to conform to the evidence of reality, and not vice versa.

The ultimate arbiter of truth is experiment, not the comfort one derives from one's a priori beliefs, nor the beauty or elegance one ascribes to one's theoretical models.

Now, since the time of Newton there had been a debate about whether light was a wave---that is, a traveling disturbance in some background medium---or a particle, which travels regardless of the presence of a background medium. The observation of Maxwell that electromagnetic waves must exist and that their speed was identical to that of light ended the debate: light was an electromagnetic wave.

Most people don't base their morality on religion in spite what they say. If you ask people, "If you didn't believe in God, would you go out and kill your neighbour?" Most people will say, "No".

There is a maxim about the universe which I always tell my students: That which is not explicitly forbidden is guaranteed to occur.

Lack of comfort means we are on the threshold of new insights.

The fact is that people would rather cling when they're afraid of something to a priori beliefs than rather open their minds about it.