‘Gu’ refers to darkness assuming the form of ignorance and ‘ru ’ to the radiance in the form of spiritual knowledge, which dispels this darkness. Thus the Guru is the one who dispels the darkness of ignorance. Holy text Navachakreshvar Tantra describes Guru as -The one who knows the subtle body (pinda), the all pervading nature, the form and that which is beyond the form equally well is a real Guru. Here the subtle body refers to the embodied soul and the all pervading nature to Shiv (Brahman). Form refers to the manifest and that beyond the form to the unmanifest. Need of a Guru: 1. Only the Guru can guide us towards the Path leading to God. 2. A disciple can progress spiritually through his own efforts. But his path to self-realization or towards perfection becomes easy when he follows the teachings and is under the guidance of an able Guru. 3. If a steamer reaches its destination in 4 hours, then a tiny boat tied to it also reaches the destination in 4 hours. But, if the tiny boat is separated from the steamer, it would take 12 hours to reach the same destination. Similarly, if we make efforts towards spiritual progress without taking appropriate guidance then we would require a long time to progress due to our personality defects and the mistakes we commit. However, under the guidance of an appropriate Guru we are able to cover the distance of 12 hours within just 4 hours. Hence, according to the Sanskrit proverb 'Mahajano yena gataha sa panthaha' (one should follow the path taken by great souls/people}, one should accept and get the guidance of a Guru.