"We progress when we trade and we only really trade productively when we trust each other." <http://www.rationaloptimist.com/books/rational-optimist-how-prosperity-evolves>http<http://www.rationaloptimist.com/books/rational-optimist-how-prosperity-evolves>://www.rationaloptimist.com/books/rational-optimist-how-prosperity-evolves "People Who experience mood swings, fear, voices and visions"