爱是一种极其困难的领悟：除了自己之外还有其他真实存在。
The first duty of a revolutionary is to be educated.
The best buildings are those that age gracefully.
诗歌应当像利剑一样锋利。
Customer trust is hard to earn and easy to lose—guard it fiercely.
酸和碱不是绝对的，而是相对的。