"The very least you can do in your life is to figure out what you hope for. And the most you can do is live inside that hope. Not admire it from a distance but live right in it, under its roof."
I don't think that when people grow up, they will become more broad-minded and can accept everything.Conversely, I think it's a selecting process, knowing what's the most important and what's the least. And then be a simple man.
Sustainability isn't an option; it's a necessity for the future of energy.