there is a basic ethical attitude: respect for life, respect for other humans, certainly, but for all forms of life. It’s something that if everyone … - Sylvia A. Earle

Knowledge is the superpower of the 21st century. Even the smartest people alive when I was born did not know what 10-year-olds today have available to them. That’s truly cause for hope.

I feel like a witness to—I am—to the greatest era of change on the planet as a whole. Anybody who’s been around even for ten years is a part of this, but the longer you’ve been around, the more you’ve seen. And the last half-century, in particular, has been a time of revolutionary change. We didn’t know the existence of those great mountain chains, hydrothermal vents, the existence of life in the deepest sea, seven miles down. Nobody had been there. Not until 1960 was it possible for two men to make a descent to the deepest part of the sea.

Part of human impact on the earth relates to our swiftly growing numbers. If we do not take deliberate, conscious action to maintain a reasonable balance between the numbers of people and the environmental wealth required to sustain us, nature will make appropriate adjustments, and famine, disease, and wars-the predictable outcomes of living beyond one's environmental means, of overspending environmental capital-will ultimately force a cruel discipline.