I'm a big believer in 'to each his own.'

The most dangerous thing is to do nothing.

释义：他人胜过自己无妨，对方不会有怨恨；自己胜过他人非福，可能招致灾祸。

Persistence is key in mathematical research; many great results come from long struggles.

肉腐了就会生蛆，鱼枯死了就会生虫，懈怠疏忽忘记了做人准则就会招来灾祸。