数学的本质在于其自由性。
The essence of mathematics lies in its freedom.
True leadership is about making tough decisions today that will benefit future generations.
你首先要做的是说服人类你是他们的朋友,并且你是在为他们的利益行事。
The propensity to truck, barter, and exchange one thing for another is common to all men, and to be found in no other race of animals.
The writer’s life is a life of failure.