When an investigator has developed a formula which gives a complete representation of the phenomena within a certain range, he may be prone to satisfaction. Would it not be wiser if he should say 'Foiled again! I can find out no more about Nature along this line.'

I believe there are 15, 747, 724, 136, 275, 002, 577, 605, 653, 961, 181, 555, 468, 044, 717, 914, 527, 116, 709, 366, 231, 425, 076, 185, 631, 031, 296 protons in the universe and the same number of electrons.

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

The mathematics is not there till we put it there.

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

Who will observe the observers?

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