This text is a brief version of book "Reflections of genius"."Acquire in youth that at the years will recover to you the damage caused by old age".Leonardo da VinciAmong genii of epoch of Renaissance one of the first places legally belongs to Leonardo da Vinci. Force of his mind, his scientific foresights, remarkable technical inventions, finally, his great realistic art is all plunged into amazement already him contemporaries, inclined to perceive Леонардо as living embodiment of that ideal of the all-round developed personality, about that the best dreamed from thinkers and writers of XV, - XVI of centuries. Secret reflections of Leonardo da Vinci were the textbook of wisdom for many great people of the past. Glory of the great Italian thinker already in the time of life was such, that the European monarchs competed for a right to offer to him service for itself at court.We remind that this text is a summary of book