"I think the environmental movement has failed in that it's used the stick too much; it's used the apocalyptic tone too much; it hasn't sold the positive aspects of being environmentally concerned and trying to pull us out."

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Sometimes that irrational commitment to principle is what society needs to survive. Whenever you talk about radicalism, whenever you talk about activism, whenever you talk about progressive activity, that sort of moves the measure of liberty in human society forward, makes us all enjoy a better standard of liberty, it typically starts out criminal. It typically starts out a little bit shaky, and rather radical. And that's irrational to put yourself up to do that.

— Edward Snowden