毛羽不丰满者不可以高飞。
译文：鸟的羽毛尚未丰满，就不能展翅高飞。
Progress is impossible without change, and those who cannot change their minds cannot change anything.
A malignant book would hurt nobody but the fool who wrote it.
We don't inherit leather from our ancestors—we borrow it from our children.
The only real mistake is the one from which we learn nothing.
梦想和目标的区别在于时间表。