Food intake, fear, sleep and sexual satisfaction: are four natural instincts. Human states and situations arise due to these four. The results and the effects of engrossment in them, and the dangers due to this engrossment need to be understood through correct scientific understanding. Who can give one such an understanding? Worldly scientific experiments and pursuits help human beings and life on this earth. But this worldly life is one experiment (prayog) and the one who lives life is an experimenter (prayogi) and an even higher understanding is that, this human body complex is one experiment and ‘potey – the Self’ is only the experimenter who is separate from the experiment. The spiritual scientist can unfold the science of profound secrets on the basis of experiential knowledge, in front of the world, as it is, and by knowing this, we are filled with sheer awe and wonder!