Probably the simplest hypothesis... is that there may be a slow process of annihilation of matter.

We have found that where science has progressed the farthest, the mind has but regained from nature that which the mind has put into nature. We have found a strange foot-print on the shores of the unknown. We have devised profound theories, one after another, to account for its origin. At last, we have succeeded in reconstructing the creature that made the foot-print. And Lo! it is our own.

Asked in 1919 whether it was true that only three people in the world understood the theory of general relativity, [Eddington] allegedly replied: "Who's the third?"

We have found that where science has progressed the farthest, the mind has but regained from nature that which the mind put into nature.

The quest of the absolute leads into the four-dimensional world.

The electron, as it leaves the atom, crystallises out of Schrodinger's mist like a genie emerging from his bottle.

But it is necessary to insist more strongly than usual that what I am putting before you is a model-the Bohr model atom-because later I shall take you to a profounder level of representation in which the electron instead of being confined to a particular locality is distributed in a sort of probability haze all over the atom.