To understand consciousness, study its role in survival.
The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.
Quality is not an act, it is a habit.
唯一受过教育的人是学会了如何学习和改变的人。
对民主的热爱就是对平等的热爱。
数学不是观赏性运动——你必须参与其中才能欣赏它的美。