The gross heathenism of civilization has generally destroyed nature, and poetry, and all that is spiritual.

Every day is Earth Day.

The command "Be fruitful and multiply" was promulgated, according to our authorities, when the population of the world consisted of two people.

I looked at my father and looked at those dry fields [in Malawi]. It was the future I couldn’t accept.

All the human and animal manure which the world wastes, if returned to the land, instead of being thrown into the sea, would suffice to nourish the world.