我只和自己競爭，不和別人競爭。
做兒女的使用不正當之道謀求私利，家庭必定混亂，做臣子的使用不正當之義揚個人私名，國家必定危險。國家和家庭一樣，會毀于不團結(jié)。
The future of drones is not to replace humans, but to help them do their jobs better.
It seems to me that if you or I must choose between two courses of thought or action, we should remember our dying and try so to live that our death brings no pleasure to the world.