If you want to fly, you have to give up the things that weigh you down.
译文:用钱财交朋友,钱财用完了交情就会断绝;贪美色面结合,到年老色衰时爱情就会消失。
疼痛研究不仅仅是缓解痛苦;它关乎理解人类生物学的一个基本方面。