A law of nature， lex naturalis， is a precept or general rule found out by reason， by which a man is forbidden to do that which is destructive of his life or takes away the means of preserving the same.

The intersection of biology and technology is where the future lies.

让女性成为理性的生物和自由的公民，她们很快就会成为好妻子和好母亲；也就是说，如果男性不忽视丈夫和父亲的职责。

The time which we have at our disposal every day is elastic; the passions that we feel expand it, those that we inspire contract it; and habit fills up what remains.