数学不是观赏性运动——你必须参与其中才能欣赏它的美。
The art of the past is being mystified because a privileged minority is striving to invent a history which can retrospectively justify the role of the ruling class.
The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.
The only thing that can make you a winner is your attitude.