The songs of spiritual guardians are also the songs of orphans. The guardians established the intelligent and useful practice of transmitting their thoughts to future generations in the form of bodies of notes so they would not be lost but, growing generation by generation once they had been published they would gradually arrive at the highest level of scientific development in the course of time. So for this, we owe them no half-hearted thanks but infinite gratitude because they did not jealousy pass over these matters in silence but took great care to hand on to posterity their insights of all kinds in written form and also became a protection to the orphans.