The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.

译文： 深敛沉着、敦厚持重是第一等资质，光明磊落、豪迈雄健是第二等资质，聪明机智、多才明辨是第三等资质。

If you’re not willing to take risks, you’re not going to achieve anything extraordinary.

质量不是理论；它是一种实践。