人的价值或价值，如同所有其他事物一样，是他的价格；也就是说，为使用他的力量所愿意付出的代价。
The value or worth of a man is, as of all other things, his price; that is to say, so much as would be given for the use of his power.
真正的力量不在于肌肉，而在于心灵。
追求知识是一段永无止境的旅程，这正是它如此令人兴奋的原因。