"There are people of the past, people of the future, people of the eternity" - claimed Nikolai Berdyaev. We forgot about the prematurity ... probably do not want to dig into it, because it is always bleak and doom ... There are heroes of the past, present and future ... And the heroes of the prematurity. Alexander Leonidovich Chizhevskii, "Leonardo da Vinci of the 20th century" - is one of them ...