Music is the language of the spirit.
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
坚持到底。无论发生什么,都要坚持你的计划。
每种心理状态都有其存在的目的;要理解它,我们必须询问它在更广泛的行为系统中发挥什么功能。
The habit of searching for the positive in everything will transform your life.