How the past perishes is how the future becomes.

The art of progress is to preserve order amid change and to preserve change amid order.

True courage is not the brutal force of vulgar heroes, but the firm resolve of virtue and reason.

You may not divide the seamless coat of learning.

Nature is probably quite indifferent to the aesthetic preferences of mathematicians.

Great art is more than a transient refreshment. It is something which adds to the permanent richness of the soul's self-attainment. It justifies itself both by its immediate enjoyment, and also by its discipline of the inmost being. Its discipline is not distinct from enjoyment but by reason of it. It transforms the soul into the permanent realization of values extending beyond its former self.

An open mind is all very well in its way, but it ought not to be so open that there is no keeping anything in or out of it.