Theology is unnecessary.

It is impossible to imagine a four-dimensional space. I personally find it hard enough to visualize a three-dimensional space!

Once I wept for I had no shoes. Then I met a man with no feet, so I took his shoes. I mean, it wasn't as if he was going to need them.

There are plenty of dead scientists I admire, but I can't think of any living ones. This is probably because it is only in retrospect that one can see who made the important contributions.

I thought Eddie Redmayne portrayed me very well... At times I thought he was me.

Don't be disabled in spirit as well as physically.

If we do discover a complete theory, it should be in time understandable in broad principle by everyone. Then we shall all, philosophers, scientists, and just ordinary people be able to take part in the discussion of why we and the universe exist.