The more success the quantum theory has, the sillier it looks

A theory is something nobody believes, except the person who made it. An experiment is something everybody believes, except the person who made it.

Thus the partial differential equation entered theoretical physics as a handmaid, but has gradually become mistress.

A university student attending lectures on general relativity i the morning and others on quantum mechanics in the afternoon might be forgiven for thinking that his professors are fools, or have neglected to communicate with each other for at least a century.

If you've never done anything wrong it's probably because you have never tried anything new.

a purely algebraic physics.