數(shù)學(xué)的本質(zhì)在于它的自由。
A person who is too nice an observer of the business of the crowd, like one who is too curious in observing the labor of bees, will often be stung for his curiosity.
定價(jià)的藝術(shù)不在于設(shè)定價(jià)格，而在于設(shè)計(jì)揭示真實(shí)價(jià)值的過(guò)程。
我和普通人一樣。會(huì)受傷也會(huì)流血，也很容易難為情。