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

Since the mathematicians have invaded the theory of relativity, I do not understand it myself anymore.

One must divide one's time between politics and equations. But our equations are much more important to me, because politics is for the present, while our equations are for eternity.

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

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

a purely algebraic physics.