The soul becomes prudent by sitting and being quiet.

Men become richer not only by increasing their existing wealth but also by decreasing their expenditure.

To be conscious that we are perceiving or thinking is to be conscious of our own existence.

All men are alike when asleep.

Nature does nothing without a purpose. In children may be observed the traces and seeds of what will one day be settled psychological habits, though psychologically a child hardly differs for the time being from an animal.

Nature herself, as has been often said, requires that we should be able, not only to work well, but to use leisure well; for, as I must repeat once again, the first principle of all action is leisure. Both are required, but leisure is better than occupation and is its end.

Philosophy begins with wonder.