一个行为的后果会影响它再次发生的概率。
Success is not final, failure is not fatal: It is the courage to continue that counts.
The desire for recognition, the thymotic part of the soul, is the most political part of man.
大自然是伟大的老师，当别人睡觉时，我从她那里学得最好。
To love is to see the invisible and to believe in the impossible.