最好的教师是建议而非教条化，并激发听众自我学习的愿望。
The best teacher is the one who suggests rather than dogmatizes, and inspires his listener with the wish to teach himself.
筹划洋人的事情一定要先了解洋人的情况，要了解洋人的情况一定知道洋人的情况。
成功的关键在于敢于思考非传统的想法。