Success is not final, failure is not fatal: It is the courage to continue that counts.

Every tree we plant today is a legacy for generations we'll never meet.

I believe that the testing of the student's achievements in order to see if he meets some criterion held by the teacher, is directly contrary to the implications of therapy for significant learning.

矿业中的多样性不是可选项，而是发展的必要条件。

电锯不会毁掉森林，短视思维才会。