A lot~~

Teaching is the most superior position under the sun. ——[Czech] Comenius

Teachers are not only disseminators of knowledge, but also role models. ——[USA] Bruner

If you love your own value, you have to create value for the world. ——[Germany] Goethe

Without passion, no great cause in the world can be completed. ——[Germany] Hegel

To light the way for others, you must shine your own light - this is the greatest happiness of human beings. ——[Former Soviet Union] Dzerzhinsky

There is only one subject that must be taught to children, and this subject is the bounden duty of life. ...I would rather call a teacher with this kind of knowledge a mentor rather than a teacher, because the question is not what he should teach his children, but how he should guide his children to behave. ——[France] Rousseau

The movement of icebergs in the sea is majestic and spectacular because only one-eighth of it is above the water. ——[USA] Hemingway

If he is upright, he will not do what he is told; if he is not upright, he will not do what he is told.

——[China]Confucius