Man, like no other terrestrial creature, was lucky to have reason and choice. The person chooses his whole life. Taking a step, he faces a choice: to the right or left, - where to go next. He takes one more step and again chooses, and so walks to the end of the road. Some go faster, others slower, and the result is different: you make a step and either fall into the bottomless abyss, or you get your foot on the escalator to heaven.