瀑布歌唱著：「虽然渴者只需少许水便足够，我却乐意给与我的全部」

Freedom is not merely the opportunity to do as one pleases; neither is it merely the opportunity to choose between set alternatives. Freedom is, first of all, the chance to formulate the available choices, to argue over them - and then, the opportunity to choose.

Genetic research should serve humanity, not just commercial interests.

译文：志向不坚定的人，智慧就得不到充分的发挥，说话不守信用的人做事就很难获得成功。赏析：志向不坚定，做事就会摇摆不定，就会半途而废，不守信用就很难得到别人的信任，将无法在社会上立足。

出自《海国图志序》。善于学习外国的长处，就能够征服外国;不善于学习外国的长处就会被外国所征服。

心灵进化是为了应对存在的挑战。