Paul Dirac Physics Quotations

The methods of theoretical physics should be applicable to all those branches of thought in which the essential features are expressible with numbers.

The only object of theoretical physics is to calculate results that can be compared with experiment... it is quite unnecessary that any satisfactory description of the whole course of the phenomena should be given.

Quantum mechanics has explained all of chemistry and most of physics.

A book on the new physics, if not purely descriptive of experimental work, must essentially be mathematical.