a man does not cry because he is sad, he is sad because he cries

Procrastination is attitude's natural assassin. There's nothing so fatiguing as an uncompleted task

The history of philosophy is to a great extent that of a certain clash of human temperaments.

So it is with children who learn to read fluently and well: They begin to take flight into whole new worlds as effortlessly as young birds take to the sky.

To know one thing thoroughly would be to know the universe.

Pretend what we may, the whole man within us is at work when we form our philosophical opinions. Intellect, will, taste, and passion co-operate just as they do in practical affairs; and lucky it is if the passion be not something as petty as a love of personal conquest over the philosopher across the way.

Our errors are surely not such awfully solemn things. In a world where we are so certain to incur them in spite of all our caution, a certain lightness of heart seems healthier than this excessive nervousness on their behalf.