The human being needs sadness as much as he needs joy.
人类需要悲伤,正如需要欢乐一样。
沙漠之美,在于人们意识到在它其中的某地,隐藏着一口水井,一泓清泉。
预测未来的最好方法就是创造未来。
Keeping an active mind has been vital to my survival, as has been maintaining a sense of humor.
未来是让技术对每个人来说都是可及的。