人不仅是自然的存在，也是历史的存在。

"The number one benefit of information technology is that it empowers people to do what they want to do. It lets people be creative. It lets people be productive. It lets people learn things they didn't think they could learn before, and so in a sense it is all about potential."

"We are all time travelers, moving forward at the speed of life, but always looking back."

【译文】人活一辈子，就像花草树木繁荣，一春一秋，非常短暂。年少时不知道勤学苦读，弹指间就会变成白发老翁。月亮过了十五后光明就会越来越少，人到中年还一事无成，也就不会有大的作为了。