数学不知道种族或地理界限;对于数学来说,文化世界是一个国家。
如果我们照顾好海洋,海洋也会照顾好我们。
A truth ceases to be true when more than one person believes in it.
真正的领导力是创造更多领导者,而不是追随者。
The tragedy of life is not that the beautiful things die young, but that they grow old and mean.