To feel much for others and little for ourselves； to restrain our selfishness and exercise our benevolent affections， constitute the perfection of human nature.

Your time is limited, so don't waste it living someone else's life.

想像力比知识更重要。因为知识是有限的，而想像力是无限,它包含了一切,推动着进步,是人类进化的源泉。