When you begin to do things that raise the achievement of the poorest and disenfranchised students, you may not always get applause. You need to be ready for that.
Whether a man is burdened by power or enjoys power; whether he is trapped by responsibility or made free by it; whether he is moved by other people and outer forces or moves them this is of the essence of leadership.
A teacher who cannot explain any abstract subject to a child does not himself thoroughly understand his subject; if he does not attempt to break down his knowledge to fit the child’s mind, he does not understand teaching.