把这一句，留给此刻的你
I beg of you always to dwell upon the necessity of a thorough understanding of principles, in order to stop the vivacity of his mind, and please do not forget to meditate upon the subject of our discussion.
我请求你永远仔细考虑一下彻底理解原则的必要性，以便使他的头脑停止活跃，请不要忘记考虑一下我们讨论的问题。