The best stories are those that ask questions, not answer them.

To do mathematics is to explore a universe of ideas, where the only limit is your imagination.

He said that the way of the world is to bloom and to flower and die but in the affairs of men there is no waning and the noon of his expression signals the onset of night. His spirit is exhausted at the peak of its achievement. His meridian is at once his darkening and the evening of his day.

A lie can travel halfway around the world while the truth is putting on its shoes.

教育的艺术必须从教育的科学中衍生出其规则。