Shrii Prabhat Rainjan Sarkar concluded his original Progressive Utilization Theory (Prout) in 1959 with, "This is the Progressive Utilization Theory, propounded for the happiness and all-round welfare of all."
Prout is the first socio-economic theory that aims at the progress of all. It does not cater in particular to any special interest group or section of society, such as first and foremost capitalists (in capitalism) or only workers (in communism), race, sex, etc. Prout favours all.
Not only is Prout the first theory to embrace all social classes. It also takes into account the complete development of human potential: physical, psychic, and spiritual. Prout acknowledges all living beings as members of the same universal family with the same intrinsic potential for all-round growth and fulfilment. Prout's concept of society emphasizes that no one should lag behind in the collective movement from the first expression of morality to the final establishment in ultimate existential bliss.