The African artist is not a representative but an individual voice.
非洲艺术家不是代表，而是个体的声音。
One must not lose desires. They are mighty stimulants to creativeness, to love, and to long life.
The only way to learn mathematics is to do mathematics.
释义：不热衷打听他人的是非，不刻意关注别人的缺点，不传播他人的过错。
"A great book is a friend that never lets you down."
任何公司最有价值的资产是其员工。