Our foibles are really what make us lovable.

There is nothing more frightful than ignorance in action.

He who possesses science and art, Possesses religion as well; He who possesses neither of these, Had better have religion.

Progress has not followed a straight ascending line, but a spiral with rhythms of progress and retrogression, of evolution and dissolution.

All truths are old, and all that we have to do is recognize and utter them anew.

We have time enough if we but use it aright

Hypotheses are lullabies for teachers to sing their students to sleep.