The writer must be a witness to his time.
我们的后代将创造令我们惊叹的成就，但其实只要我们的足够的想象力，他们会创造的部分东西，用今天的材料和工具就已经能实现了。所以，要想得更大一点。
Every day is a new opportunity to change your life.
Fear is the main source of superstition， and one of the main sources of cruelty. To conquer fear is the beginning of wisdom， in the pursuit of truth as in the endeavour after a worthy manner of life.
Persistence is the key to unlocking the mysteries of medicine.
