石头或许坚硬，但我们的决心必须更加坚定。
想象是灵魂的眼睛。
The essence of mathematics is not to make simple things complicated, but to make complicated things simple.
书籍是最安静且最恒久的朋友。
Every mental act is an act of adjustment.
"True leadership is about creating an environment where people can flourish and achieve their full potential."
To remain quiet is to resolve the mind in the self.