It is more important that a proposition be interesting than that it be true. This statement is almost a tautology. For the energy of operation of a proposition in an occasion of experience is its interest and is its importance. But of course a true proposition is more apt to be interesting than a false one.

In a certain sense, everything is everywhere at all times. For every location involves an aspect of itself in every other location. Thus every spatio-temporal standpoint mirrors the world

A science which hesitates to forget its founders is lost.

...the only simplicity to be trusted is the simplicity to be found on the far side of complexity.

In all education the main cause of failure is staleness.

From the moment of birth we are immersed in action, and can only fitfully guide it by taking thought.

No Roman ever died in contemplation over a geometrical diagram.