"Every child deserves a bookshelf full of stories that reflect their own experiences and open windows to new worlds."

The power of a system comes from its ability to compose and decompose representations.

We are all in the gutter, but some of us are looking at the stars.

"The city’s poor are like the roots of a tree; unseen, but essential to its life."

Understanding nature’s complexity is the ultimate challenge.

你不必总是比别人强，但要比过去的自己更强。