未经反思自省的人生不值得活。(Life is not worth living if it is not subject to reexamination.)
我只知道自己一无所知。(I know nothing except the fact of my ignorance. )
坏人活着是为了吃与喝，而好人却是为了活着才吃与喝。(Bad men live that they may eat and drink, whereas good men eat and drink that they may live. )
