MacAllister wasn’t always right, but he was smart enough to know that. He was willing to change his mind when the evidence pointed in a different dir… - Jack McDevitt

Our generation faces only one danger, that we might say to ourselves this is not our problem, and that we will pass it off to the distant future. That we might shrug and say to ourselves that a thousand years is a long time. That we will become complacent and conclude that this problem will take care of itself.
But I say to you, we should take no satisfaction in the fact that we ourselves are in no physical danger. This is a hazard to our world, to everything we hope to pass on to future generations. And it is clear that we should act now, while we have the time.

We are not a debating club," Franklin said. "Our goal is to get at the truth, where that is possible.

Defend your opinion only if it can be shown to be true, not because it is your opinion.