每个数学问题都有解答;挑战在于找到它。
Every mathematical problem has a solution; the challenge is finding it.
The key to successful investing is to relate the price you pay to the value you get.
译文:议论别人的不足之处,这不能叫做直爽,帮助别人做坏事,这不能叫做义气。赏析:闲谈莫论人非,对别人的缺点和不足揪着不放,这不是一个智者所为,帮助别人做坏事,不是善举,而是助纣为虐。