I cannot stress often enough that what science is all about is not proving things to be true but proving them to be false.

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.

The real thing that physics tell us about the universe is that it's big, rare event happens all the time — including life — and that doesn't mean it's special.

It really is the most poetic thing I know about physics: you are all stardust.

Metaphysical speculation is independent of the physical validity of the Big Bang itself and is irrelevant to our understanding of it.

I like to say that while antimatter may seem strange, it is strange in the sense that Belgians are strange. They are not really strange; it is just that one rarely meets them.

We all trust each other to some extent. We have to rely on experts to some extent, but we should learn to be sceptical.