Considering the communication aspect.

Here you can examine and revise some of my ideas, and development and capture of some fundamental elements of them. Most of the time my sketchbook assists me to solving problems.

Where do correct ideas come from? Do they drop from the skies? No. Are they innate in the mind? No. They come from social practice, and from it alone; they come from three kinds of social practice, the struggle for production, the class struggle and scientific experiments.

´Mao Tse-tung´