出自汉·桓宽《盐铁论·地广》。贱，指地位低。贫，指没有钱财。地位卑贱并不妨碍一个人的智慧，家境贫寒并不妨碍一个人的品行。这句话言评价一个人的才智、德行不能根据其社会地位、经济状况来作判断。出身低贱的人，不一定没有智慧；家境贫寒的人，不一定没有品行。

Success is not final, failure is not fatal: it is the courage to continue that counts.

The first step towards philosophy is incredulity.

For beautiful eyes, look for the good in others; for beautiful lips, speak only words of kindness; and for poise, walk with the knowledge that you are never alone.

发明是需求之母。