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