The beauty of mathematics lies in its simplicity and depth.

The mind is a dynamic equilibrium of processes.

The habits of life form the soul, and the soul forms the countenance.

"The most common way people give up their power is by thinking they don't have any."

可持续性不仅仅是种树；而是种下能成长为行动的想法。

在数学中，你不理解事物。你只是习惯它们。

And we also suck in messages from everything from the television, to advertising, to marketing, etc. These are hugely powerful forces that define what we want and how we view ourselves. When we're told that banking is a very respectable profession, a lot of us want to go into banking. When banking is no longer so respectable, we lose interest in banking. We are highly open to suggestion.