We are at a crossroads in human history. Never before has there been a moment so simultaneously perilous and promising. We are the first species to have taken evolution into our own hands.
Carl SaganThe method of science, as stodgy and grumpy as it may seem, is far more important than the findings of science.
Carl SaganI would love to believe that when I die I will live again, that some thinking, feeling, remembering part of me will continue. But as much as I want to believe that, and despite the ancient and worldwide cultural traditions that assert an afterlife, I know of nothing to suggest that it is more than wishful thinking.
Carl SaganRecent research shows that many children without enough to eat wind up with diminished capacity to understand and learn (โcognitive impairmentโ ). Children don't have to be starving for this to happen. Even mild undernourishment โ the kind most common among poor people in America โ can do it.
Carl Sagan