I don’t do things for the reaction or the criticism. I do things because I love doing them.

数学的快乐来自于为理解而奋斗。

学习应使人感到快乐，否则不能称之为真正的学习。

The battle of life is already half won by the young man who is brought personally in contact with high officials; and the great aim of every boy should be to do something beyond the sphere of his duties--something which attracts the attention of those who over him.

A building should be like a tree—it grows and changes with the seasons.