The only service a friend can really render is to keep up your courage by holding up to you a mirror in which you can see a noble image of yourself.

"El escritor es un testigo de su tiempo, y su obra es el reflejo de la sociedad en la que vive."

The only thing that separates us from the animals is our ability to accessorize.

The language of cells is written in molecules and forces.

I think the most important thing is to be honest and truthful with what you say and what you do.

【大意】把猿猴关在笼子里，它就会像猪一样，并不是它没有灵巧攀登、轻捷跳跃的本领，而是没有它发挥本领的机会。

做伟大的工作的唯一方法就是热爱你所做的事情。

The plastic industry must evolve or become obsolete—sustainability is no longer optional.