The trouble is that we suffer—all of us—from just me-ism. “I am just one person. What I do, or don’t do, can’t possibly make any difference. So why should I bother?” Imagine: as more and more people around the world become aware of what is good and what is bad for the environment, and for society, this means there are thousands, then millions, then billions all thinking the same: “It can’t make any difference what I do—it’s just me.” Think how it would be if we could turn that around—thousands and millions and billions of people all knowing that what they do does make a difference.

