数学的快乐来自于为理解而奋斗。
The joy of mathematics comes from the struggle to understand.
奥运会中最重要的不是赢得比赛,而是重在参与;生活中最重要的不是征服,而是要好好战斗。
The true value of a forest isn't measured in board feet, but in biodiversity and carbon sequestration.
长夜黑暗,处处险恶。
领导者的角色是创造一个让人们能够发挥最佳水平的环境。