" Both outer and inner phenomena arise as a result of causes and conditions. Outer phenomena, the things of the physical world, arise in a series of seven steps. The texts use the example of a seed giving rise to a plant that gives rise to a fruit. The seven steps are: seed, sprout, leaflets, stemmed plant, bud, flower, fruit. Each stage succeeds the previous one in time and in order, each giving rise to the next. "

― , Ways of Enlightenment