H. P. Blavatsky

Vajrapâni. Or Manjushrî, the Dhyâni‐Bodhisattva (as the spiritual reflex, or the son of the Dhyâni.Buddhas, on earth) born directly from the subjective form of existence; a deity worshipped by the profane as a god, and by Initiates as a subjective Force, the real nature of which is known only to, and explained by, the highest Initiates of the Yogâchârya School.

Source: H. P. Blavatsky, The Theosophical Glossary, art. Vajrapani