Mānasaputra
Mānasaputra is a combined Sanskrit term meaning the "mind-born" or "sons of mind" (from mānasa (मानस) "mind" + putra (पुत्र)"son").
In Hinduism it is said that at the beginning of the process of creation, Brahmā emanates from his mind the four Kumāras to help him with creation of man. They are described as the first mind-born sons. However, they refuse his order to procreate and instead devote themselves to worship God and to celibacy. Brahmā then proceeds to emanate from his mind seven (sometimes ten) more sons or Prajāpatis, who became the fathers of the human race. Since all these sons were born out of his mind they are called Mānasaputras.
In Theosophy
The term "mānasaputra" is used in different ways in the Theosophical literature. On one hand, it refers to the Kumaras and Solar Pitris who incarnated in infant humanity to awaken its mind. The term is also used to refer to the human Higher Egos before they incarnated during the third Root-Race. H. P. Blavatsky wrote:
Manasaputra (Sans.) Lit., the "Sons of Mind" or mind-born Sons; a name given to our Higher Egos before they incarnated in mankind. In the exoteric though allegorical and symbolical Puranas (the sacred and ancient writings of Hindus), it is the title given to the mind-born Sons of Brahma, the Kumara.[1]
Some Manasaputras are "the Sons of Wisdom who informed the mindless man, and endowed him with his mind (manas)."[2]