The essence of mathematics lies in its freedom.
数学的本质在于它的自由。
现实总是比想象更离奇。
我们必须建立一个既能保护公民又不与世界隔绝的欧洲。
The power of the Web is in its universality. Access by everyone regardless of disability is an essential aspect.
I don't let the world silence my voice.