给定系统中的酸和碱不是绝对的，而是相互关联的。
"To live is the rarest thing in the world. Most people exist, that is all."
The act of writing is an act of hope.
体育绝不能被视为奢侈品。
To understand a program you must become both the machine and the program.
The essence of finance is to serve the real economy.
对所有人有礼，与多数人交际，和少数人亲近，交一位朋友，不与人为敌。
It seems to me that if you or I must choose between two courses of thought or action, we should remember our dying and try so to live that our death brings no pleasure to the world.