Inspirational Quotes
Words to motivate, inspire, and guide you.
EvolutionComplexityKey Moments In HistoryTurning PointsIntelligence There have only been about a half dozen genuinely important events in the four-billion-year saga of life on Earth: single-celled life, multicelled life, differentiation into plants and animals, movement of animals from water to land, and the advent of mammals and consciousness.
