True happiness comes from within, not from external achievements or possessions.
教育的艺术必须从教育的科学中汲取其法则。
马克思的功绩在于他忽然在社会思想史上产生了一个质的变化。他解释历史,理解其动力,预测未来,但除了预测之外,他还表达了一个革命性的概念:世界不仅必须被解释,还必须被改变。
To be human is to be flawed, but it is also to be capable of great change.
"To read is to travel without moving, to explore without leaving home."