行为由当前刺激情境和过去的强化历史决定。
The propensity to truck, barter, and exchange one thing for another is common to all men, and to be found in no other race of animals.
科学中最重要的事情不是正确,而是保持好奇心。
Every performance is a new challenge.
"Every child deserves to see themselves in a book."
"In every story lies a hidden truth, waiting to be discovered by those who dare to look deeper."