大多数人死在二十或三十岁,此后他们只是自己的影子。
Sustainability is no longer an option; it's a necessity for survival in today's world.
Your past does not equal your future.
词的体制,幽微美好,能够表达诗所不能表达的内容,但不能完全表达诗所能表达的内容。
学习数学的唯一方法就是做数学。
The best books are the ones that children want to read again and again.