"The only thing we can be sure of about the future is that it will be different."
The computer is the ultimate polluter: its feces are indistinguish- able from the food it produces.
一人独处应谨慎自己的行为，预知每一心思所含的意念，严肃威仪安于天命，敬人伦以成圣贤，谨慎各种行为以成就德引，改过向善以成贤良。
我们地球的过去历史必须通过现在可以看到的现象来解释。