If you do not actually like boys and girls, or young men and young women, give up teaching.

These are not books, lumps of lifeless paper, but minds alive on the shelves.

The relation between parents and children is essentially based on teaching.

The wise teacher knows that 55 minutes of work plus 5 minutes laughter are worth twice as much as 60 minutes of unvaried work.

The real duty of man is not to extend his power or multiply his wealth beyond his needs, but to enrich and enjoy his imperishable possession: his soul.

The mind never need stop growing. Indeed, one of the few experiences which never pall is the experience of watching one's own mind and how it produces new interests, responds to new stimuli, and develops new thoughts, apparently without effort and almost independently of one's own conscious control.

A period of high civilization is one in which thoughts fly freely from mind to mind, from one country to another-yes, from the past into the present.