The only limit is the one you set for yourself.
Markets are constantly in a state of uncertainty and flux, and money is made by discounting the obvious and betting on the unexpected.
君子掌权临事,那么连小人都能变为君子,处在这种情况里,还不能成为君子的,那就是货真价实的小人了;小人弄权擅事,那么一般人都沦为小人,处在这种局面下,仍然不沦为小人的,那就是不折不扣的君子了。
把(春秋末期晋国豪富)韩魏两大家庭的财产附加给某个人,他仍然谦虚谨慎,那么他的品质就比一般人强太多了。