制革厂的遗产应以其对环境的守护来衡量。
A tannery’s legacy should be measured by its environmental stewardship.
The poet is a liar who always speaks the truth.
让孩子留在家里的最好方法是让家庭氛围愉快——并且把轮胎的气放掉。
One should eat to live，not live to eat.
最伟大的定理是那些揭示隐藏联系的定理。
The central task of education is to implant a will and facility for learning; it should produce not learned but learning people. The truly human society is a learning society, where grandparents, parents, and children are students together.