Three things are necessary for the salvation of man: to know what he ought to believe; to know what he ought to desire; and to know what he ought to do.
你在生活中能走多远取决于你对年轻人温柔,对老年人富有同情心,对奋斗者感同身受,对弱者和强者宽容。因为在你的生活中,总有一天你会成为所有这些。
你永远不会太老而不能设定另一个目标或做一个新的梦。
理解一个国家的首要条件是闻一闻它的味道。
估计问题的性质与检验统计假设的问题不同。
"The greatest enemy of love is not hate, but indifference."