The progress of mathematics is measured by the number of problems it can solve.
数学的进步是通过它能解决的问题数量来衡量的。
真相很少是纯粹的，也从不简单。
"A good cinematographer knows when to break the rules."
【译文】用心算计别人反而时时出错，退一步考虑事情路子就会很宽。