Yeasts in a brewer’s vat — Farley Mowat

We are behaving like yeasts in a brewer’s vat, multiplying mindlessly while greedily consuming the substance of a finite world. If we continue to imitate the yeast we will perish, having exhausted our resources and poisoned ourselves in the lethal brew of our own wastes. Unlike the yeasts, we have a choice. What will it be? — Farley Mowat