They are called Buddhas of Compassion because they feel their unity with all that is, and more and more so as they evolve, until finally their consciousness blends with the universe and lives eternally and immortally, because it is at one with the universe. As impersonal love is universal, their whole nature expands consequently with the universal powers that are working through them. Strive not to become holy for yourself. Strive to become holy as others strive to become holy, but only that you can forget yourself for others. Love never seeks self for self.
Love always seeks to give.
Love is the first step on the upward way. It is all intermediate steps and it is the last, if indeed there be a last. The Mahatmas are not yet Buddhas. A Buddha is a Mahatma of the highest grade. The Masters are human beings, although lofty ones, and it is this that makes them so near and dear to us.