In the middle of difficulty lies opportunity.

"You don't forget the face of the person who was your last hope."

In Burkina Faso, we have a saying: 'A tree takes time to grow.' Good architecture also takes time.

Don't go around saying the world owes you a living. The world owes you nothing. It was here first.

思考是最艰难的工作，这可能是为什么如此少的人从事它。

最大的痛苦莫过于心中有个未讲的故事。