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Lord Shiva is widely considered to be the symbol or embodiment of supreme consciousness. Parvati represents supreme knowledge, will and action, and is responsible for all creation. This force or energy is also known as kundalini shakti, the cosmic force which lies dormant in all beings. Parvati is regarded as the mother of the whole universe. The individual soul is embodied and bound to the world of name and form, and also liberated from the bondage of the world and united with supreme consciousness through her grace. Out of love and compassion for her children, she imparted her secret knowledge of liberation in the form of tantra. The techniques of yoga have their source in tantra and the two cannot be separated, just as consciousness, Shiva, cannot be separated from energy, Shakti.
Tantra is a combination of two words, tanoti and trayati, which mean 'expansion' and 'liberation' respectively. Therefore, it is the science of expanding the consciousness and liberating the energy. Tantra is the way to attain freedom from the bondage of the world while still living in it. The first step in tantra is to know the limitations and capacities of the body and mind. Next it prescribes techniques for the expansion of consciousness and the liberation of energy whereby individual limitations are transcended and a higher reality experienced.
Yoga arose at the beginning of human civilisation when man first realised his spiritual potential and began to evolve techniques to develop it. The yogic science was slowly evolved and developed by ancient sages all over the world. The essence of yoga has often been shrouded in or explained by different symbols, analogies and languages. Some traditions believe that yoga was a divine gift revealed to the ancient sages so that mankind could have the opportunity to realise its divine nature.
In ancient times, yoga techniques were kept secret and were never written down or exposed to public view. They were passed on from teacher or guru to disciple by word of mouth. In this way there was a clear understanding of their meaning and aim. Through personal experience, realised yogis and sages were able to guide sincere aspirants along the