要想消除海上的倭寇之患，先要消除人们心中的积弊

Sometimes we get sad about things and we don’t like to tell other people that we are sad about them. We like to keep it a secret. Or sometimes, we are sad but we really don’t know why we are sad, so we say we aren’t sad but we really are.

Success is not just about profit; it's about building something sustainable.

I shall be content if, because of me, there shall be better fruits and fairer flowers.

数学是上帝用来书写宇宙的语言。