It is not the strongest of the species that survives, nor the most intelligent, but the one most responsive to change.  

Teaching is not about imparting everything, but about guiding at the right moment.

Every decision we make today shapes the world of tomorrow.

"In the end, we will remember not the words of our enemies, but the silence of our friends."

Wonder is the beginning of wisdom.

做出伟大工作的唯一方法就是热爱你所做的事情。