Abstract:In this paper we hope to place the two basic facts of life, constant active self -maintenance and selfreproduction, into a fresh light. The basic idea is considering the genetic assignments as a "biological invariant of motion", the latter forming a hierarchically produced, "self -constructing", regressive time inversion symmetry restoration, a closed semantic real -time upbuilding loop. It is, actually, the predetermined future of the biological system. It is this, in fact, what gives birth to the above strange fact of determined self -maintenance and, as its derived consequence, "self" -reproduction, as the symmery attained. It is carried out in a mediated, "weak" self -reference loop, as a natural prerequisite for the invariance of the genetic code as a "biological invariant of motion". Being an involved and dubious case, as it is usual, we mainly concentrate on its origin. We suppose a special type of quantum measurement as the original assignation mechanism, with a usual concomitant time inversion symmetry breaking. Symmetry restoring, in fact, is a semiotic control process of the genetic code, the process tentatively conceived to be the living (biological) state of matter.