Behind every smile there's teeth.

Music is the one thing in which there is no use trying to deceive others or make false pretenses.

I do not enlighten those who are not eager to learn, nor arouse those who are not anxious to give an explanation themselves. If I have presented one corner of the square and they cannot come back to me with the other three, I should not go over the points again.

A man is great not because he hasn't failed; a man is great because failure hasn't stopped him.

When a man feels the difficulty of doing, can he be other than cautious and slow in speaking?

A father's and a mother's age must be borne in mind; with joy on the one hand, fear on the other.

The superior man acts before he speaks, and afterwards speaks according to his action.