The motive of success is not enough.

The study of mathematics is apt to commence in disappointment.

It belongs to the self-respect of intellect to pursue every tangle of thought to its final unravelment.

Great people plant trees they'll never sit under.

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

All practical teachers know that education is a patient process of mastery of details, minute by minute, hour by hour, day by day.

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