The entire cosmos is a cooperative. The sun, the moon, and the stars live together as a cooperative. The same is true for humans and animals, trees, and the Earth. When we realize that the world is a mutual, interdependent, cooperative enterprise -- then we can build a noble environment. If our lives are not based on this truth, then we shall perish.

True happiness consists in eliminating the false idea of 'I'.

Do work of all kinds with a mind that is void and to the voidness surrender all of the fruits.

Happiness is when there is no hunger or want at all, when we're completely free of all hunger, desire, and want.

The practice is to make the non-arising of grasping and clinging absolute, final, and eternally void, so that no grasping and clinging can ever return. Just that is enough. There is nothing else to do.

Hell was OK, until some wise guy went to heaven and came back

What is the world full of? It is full of things that arise, persist, and cease. Grasp and cling to them, and they produce suffering. Don't grasp and cling to them, and they do not produce suffering.