"Do you realize we've got 250 million years of coal? But coal has got environmental hazards to it, but there's-I'm convinced, and I know that we-technology can be developed so we can have zero-emissions coal-fired electricity plants."

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I have forgiven myself; I'll make a change. Once that forgiveness has taken place you can console yourself with the knowledge that a diamond is the result of extreme pressure. Less pressure is crystal, less than that is coal, less than that is fossilized leaves or plain dirt. Pressure can change you into something quite precious, quite wonderful, quote beautiful and extremely hard.

— Maya Angelou