任何停止学习的人都已经老了，无论是20岁还是80岁。坚持...

xiAo丁

Anyone who stops learning is old, whether at twenty or eighty. Anyone who keeps learning stays young. The greatest thing in life is to keep your mind young.
任何停止学习的人都已经老了，无论是20岁还是80岁。坚持学习的人永远年轻，人生最美好的事就是保持年轻的心。