Je Tsongkhapa

"That which is known as "meditation" is the act of sustaining an object of meditation and specific subjective aspects by repeatedly focusing your mind upon a virtuous object of meditation. The purpose of this is as follows. From beginningless time you have been under the control of your mind; your mind has not been under your control. Furthermore, your mind tended to be obscured by the afflictions and so forth. Thus meditation aims to bring this mind, which gives rise to all faults and flaws, under control and then it aims to make it servicable. Servicability means that you can direct your mind as you wish toward a virtuous object of meditation."

"The Lord Maitreya, whose name means kindliness or compassion, took up the office of Bodhisattva when the Lord Gautama laid it down, and since then He has made many efforts for the promotion of Religion. One of His first steps on assuming office was to take advantage of the tremendous magnetism generated in the world by the presence of the Buddha, to arrange that great Teachers should simultaneously appear in many different parts of the earth; so that within a comparatively short space of time we find not only the Buddha Himself, Shri Shankaracharya and Mahavira in India, but also Mithra in Persia, Laotse and Confucius in China, and Pythagoras in ancient Greece... The Bodhisattva also occupied occasionally the body of Tsong-ka-pa, the great Tibetan religious reformer, and throughout the centuries He has sent forth a stream of His pupils... who founded new sects or threw new light upon the mysteries of religion..."