It is reasonable to hope that in the not too distant future we shall be competent to understand so simple a thing as a star.

In the most modern theories of physics probability seems to have replaced aether as "the nominative of the verb 'to undulate'."

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

There is only one law of Nature-the second law of thermodynamics-which recognises a distinction between past and future more profound than the difference of plus and minus. It stands aloof from all the rest. ... It opens up a new province of knowledge, namely, the study of organisation; and it is in connection with organisation that a direction of time-flow and a distinction between doing and undoing appears for the first time.

What we makes of the world must be largely dependent on the sense-organs that we happen to possess. How the world must have changed since the man came to rely on his eyes rather than his nose.

Events do not happen; they are just there, and we come across them.

What is possible in the Cavendish Laboratory may not be too difficult in the sun.