By Shrii P. R. Sarkar
At the very outset let me state that many theories have been propounded on this earth. Some of them survived for some time and then gradually passed out of existence; others emerged like meteors, exhibiting their dazzling radiance for a very short time, and then vanished into darkness. The mere existence of a theory is not the essential point; what is important is whether the theory promoted the welfare of all, the spiritual well-being of all - otherwise its advent on this earth was quite useless. Such useless theories are not even worth mentioning.
Any theory will contain the seed of well-being if its firm foundation is sama-sama'ja tattva. It may survive for a very long period - even for eternity - if it cherishes the ideal of forever promoting the welfare of all. This is the essential point.