Most of the things worth doing in the world had been declared impossible before they were done 是什

Most of the things worth doing in the world had been declared impossible before they were done 是什

在这个世界上大部分值得你去做的事情在被做成功之前都被宣称是不可能的!

世界上大多数值得做的事情，在它们被做成之前，都曾经被宣称过是不可能做成的。
意思就是说：要敢于挑战世俗观点，变不可能为可能。