[Mqcawkzd]

It is relavent in that it is a realized master's observation how the benefits of meditation are not limited soley to the meditator - because we are all interdependent and to one degree or another share common karma since we are in the same world.

The later add-ons you refer to are the teachings of widely accepted realized beings or those who are called Bodhisattvas.

It is the Mahayana belief that all beings are in reality seeking happiness and want to be rid of their suffering and we are Buddhists not just for ourselves alone to transcend suffering but because we see it as a vehicle to bring enlightenment to all.

Mahayana Buddhists believe in a dark age when the Buddhist teachings will be lost - all humans will have to help them then are the Bodhisattvas who will remain of their own free will in samsara to help others become liberated and so that there is sufficient virtue in the world to bring about the manifestation of the next Buddha - Maitreya.