Knowledge is a comfortable and necessary retreat and shelter for us in an advanced age; and if we do not plant it when young, it will give us no shade when we grow old.
——Chesterfield British diploat and writer
知识使我们老年时能舒适地隐退，并有所寄托；但是如果年轻时不接受知识并且使它扎不下根，年老时我们就不能受益。
——英国外交家、作家 切斯特菲尔德