Mathematics is the art of asking the right questions and then finding their answers.

自由始于无知结束之时。

I don't know what's better gettin' laid or gettin' paid.

译文：知道的闲事和结识的闲人越多，招惹的是非烦恼就越多。赏析：人要多做事，少说话，不去结交造谣生事，说三道四，品行极差的人。