nonnegative (and nonzero)

"In a major change of strategy, the new head of GlaxoSmithKline, Andrew Witty, has told the Guardian he will slash prices on all medicines in the poorest countries, give back profits to be spent on hospitals and clinics and – most ground-breaking of all – share knowledge about potential drugs that are currently protected by patents."
via gaurdian.co.uk

"To be hopeful in bad times is not just foolishly romantic. It is based on the fact that human history is a history not only of cruelty, but also of compassion, sacrifice, courage, kindness... And if we do act, in however small a way, we don't have to wait for some grand utopian future. The future is an infinite succession of presents, and to live now as we think human beings should live, in defiance of all that is bad around us, is itself a marvelous victory."
(Howard Zinn)