Great to see you again! Thanks for visiting!
Some esoterists (with tendencies towards oriental esotericism) who traveled in the east, had investigated the Asiatic continent and had arrived at the conclusion that in Tibet, as well as in India, Tantra is the only truly practical school.Many Ashrams exist in the sacred land of the Vedas. They practice and study Yoga within these Ashrams; however, the most serious Ashrams are exclusively those where the Tantric teaching is abundant.
In the Hindustani markets, studious travelers can find marvelous Tantric books like Kama Kalpa and Kama Sutra. These books are illustrated with splendid photographs related to certain sacred sculptures and bas-reliefs of their Temples. [Note: He says elsewhere that these texts and photographs are often adulterated and therefore contain many practices of negative Tantra].
A careful examination of those photographs allows us to collect very interesting information about Tantric Maithuna (Sexual Yoga). The Tantric type of Hatha Yoga is extraordinary and leads the Esoterist to the Realization of the inner Self. However, Hatha Yoga without Tantra is like a garden without water. The Hindu esoteric school of Laya Yoga with its famous Laya-Kriya Tantric Sadhana is, by all means, marvelous and leads the neophytes to the the Realization of the inner Self.
If Yogananda would have accepted matrimony, it is clear that his Guru would have given him the complete Kriya. An in-depth Tantra exists in Chinese (Chan) Buddhism and also in Japanese Zen. It is lamentable that many Orientalists are content with the mere exterior cortex of Buddhism. The Medullar Bone of esoteric Buddhism and of Taoism is Tantra: Maithuna (Sexual Yoga).
The Tantric practitioners from secret Tibet and sacred India practice the positive Sexual Yoga; this is, to connect the Lingam-Yoni without the ejaculation of the Ens Seminis.