Sir Karl Popper, The Poverty of Historicism.
No doubt, biology and psychology can solve, or will soon be able to solve, the 'problem of transforming man'. Yet those who attempt to do this are bound to destroy the objectivity of science, and so science itself, since these are both based upon free competition of thought; that is, upon freedom. If the growth of reason is to continue, and human rationality to survive, then the diversity of individuals and their opinions, aims, and purposes must never be interfered with (except in extreme cases where political freedom is endangered). Even the emotionally satisfying appeal for a common purpose, however excellent, is an appeal to abandon all rival moral opinions and the cross-criticisms and arguments to which they give rise. It is an appeal to abandon rational thought.
Karl Popper, The Poverty of Historicism.
On se souviendra de la dernière fois que l'humain a voulu massivement créer un "homme nouveau" et ce à quoi ça a mené..
(Icône du "Christ de Dachau").