I don't have to prove anything to anyone. There's nothing to prove.
The goal of education is not to increase the amount of knowledge but to create the possibilities for a child to invent and discover, to create men who are capable of doing new things.
Never let your sense of morals prevent you from doing what is right.
Some of my best leading men have been dogs and horses.
The path to a lower-carbon future will require multiple solutions and approaches.