It is impossible to trap modern physics into predicting anything with perfect determinism because it deals with probabilities from the outset.

On one occasion when [William] Smart found him engrossed with his fundamental theory, he asked Eddington how many people he thought would understand what he was writing-after a pause came the reply, 'Perhaps seven.'

Human life is proverbially uncertain; few things are more certain than the solvency of a life-insurance company.

It is one thing for the human mind to extract from the phenomena of nature the laws which it has itself put into them; it may be a far harder thing to extract laws over which it has no control. It is even possible that laws which have not their origin in the mind may be irrational, and we can never succeed in formulating them.

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

In any attempt to bridge the domains of experience belonging to the spiritual and physical sides of nature, time occupies the key position.

An ocean traveler has even more vividly the impression that the ocean is made of waves than that it is made of water.