This is not far away to Huxley's 'Brave new world'.  The embryos, which exist within tubes and incubators, are provided with differing amounts of chemicals and hormones in order to condition them into predetermined classes. Embryos destined for the higher classes get chemicals to perfect them both physically and mentally, whereas those of the lower classes are altered to be imperfect in those respects. These classes, in order from highest to lowest, are Alpha, Beta, Gamma, Delta, and Epsilon. The Alphas are bred to be leaders, and the Epsilons are bred to be menial labourers.  and  In this society, emotions and individuality are conditioned out of children at a young age, and there are no lasting relationships because “every one belongs to every one else” (a common World State dictum).  Taken from: https://www.britannica.com/topic/Brave-New-World Some full audio books of 'Brave New World' on Youtube