The quality of an organization is determined by the quality of its products.
如果你把自己看的很轻,你就会飞的更高!
数学直觉就像肌肉一样 - 通过锻炼会变得更强大。
The truth is a beautiful and terrible thing, and should therefore be treated with great caution.
Life is what happens when you're busy making other plans.
God is at home, it's we who have gone out for a walk.