——〈在广州岭南学堂的演说〉,1912年5月7日
这是最好的时代,这是最坏的时代。
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
科学家不是给出正确答案的人,而是提出正确问题的人。
Science knows no country, because knowledge belongs to humanity, and is the torch which illuminates the world.
The secret of happiness is freedom, and the secret of freedom is courage.
The best architecture is both universal and local.