In order for a more or less round plate to remind me of roundness, Plato says, I have to have already met perfect roundness itself.

如果一个或多或少,有点圆的盘子能让我想到正圆,柏拉图认为,我必须已经见过完美的圆本身了

耶鲁公开课 - 死亡课程节选

Every creature, he says, has a built-in desire to preserve itself, to persevere in its own existence, to continue in its own steady state you might say, and to resist invasion or encroachment by others.

他说，任何一个生物都生而具有,保护自己的本能，保护自己的存在，延续自己稳定的状态，抵抗外界的侵犯。

耶鲁公开课 - 政治哲学导论课程节选