如果人生能像初次见面那样美好,就不会有后来的离别和悲伤。
若要培养人才,就应当向四方外国学习。
"A good book is the best of friends, the same today and forever."
Uncertainty is not the absence of information, but the presence of too much conflicting information.
儿童对活动的需要几乎比食物的需要更为强烈。
Truth is arrived at through rational reflection and observation of the natural world.