Tantra is an ancient Indian and Tibetan style of ritual and meditation.
Swami Satyananda (1923 – 2009) said, “Tantra embodies two sanskrit words: tanoti (expands) and trayoti (liberates)… It is the system by which you liberate or separate the two aspects of consciousness and matter - purusha and prakrti.”
We can consider purusha as the universal principal that is ever present, unchanging and everywhere. Prakrti as the material reality of nature which changes and evolves. Another way to consider these principles is through the enduring, infinite universe (purusha) and the material world (prakrti).
In ancient Sanskrit texts the universe is envisioned as a synthesis of observable material reality and non-observable, non-material laws and principles of nature. Purusha is the source of all consciousness, is the soul of the universe and is considered within all things, and everyone, to be eternally evolving. Prakriti is the "primal motive force" of creation, and the laws of nature.
Like many Eastern philosophies, Tantra can be considered a form of psychology in that it is a constructive system designed to assist the individual in understanding, and studying, the mind. Similarly, Tantra is concerned with psychic, spiritual and physical aspects of life. Tantric practice enables the seeker to experience higher states of consciousness for themselves through any means suitable and available to them.
“Tantra is the science of seeing, feeling, knowing the infinite in and through the finite. It leads one to the experience of the infinite through the limited world of form. And once the infinite has been seen in one object, it is then a short step to seeing the infinite in everything.” – Swami Satyananda