I have not said that a Guru is not necessary. But a Guru need not always be in human form.

First a person thinks that he is inferior and that there is a superior, all-knowing, all powerful God who controls his own and the world's destiny and worships him or does bhakti (devotion).

When he reaches a certain stage and becomes fit for enlightenment, the same God whom he was worshipping comes as Guru and leads him onward. That Guru comes only to tell him:

That God is within yourself. Dive within and realize'... God, Guru and the Self are the same.

Realization is the result of the Master's (Guru's) grace, more than teachings, lectures, meditations, etc.

They are only secondary aids, whereas the former is the primary and essential cause.

Guru's grace is always there.

You imagine it to be something somewhere high up in the sky, far away and which has to descend.

It is really inside you in your Heart, and the moment, by any of the methods, you effect subsidence or merger of the mind into its source, the grace rushes forth, spouting as from a spring from within you.

Contact with jnanis (the Self realized) is good. They will work through silence.

A Guru is not the physical form. Hence His contact remains even after the physical form of the Guru vanishes.

After your bhakti to God has matured you, God comes in the shape of a Guru and from outside pushes your mind inside, while being inside as the Self He draws you there from within.

Such a Guru is needed generally, though not for very rare and advanced souls.

One can go to another Guru after one's Guru passes away.

But after all, Gurus are one, as none of them are the form. Mental contact is always the best.

Satsang means association with Sat or Reality. One who knows or has realized Sat is also regarded as Sat.

Such association is absolutely necessary for all. Sankara has said, "In all the three worlds there is no boat like satsang to carry one safely across the ocean of births and deaths."

Guru not being physical, His contact will continue after His form vanishes.

If one Jnani exists in the world, His influence will be felt by or benefit all people in the world, and not simply His immediate disciples.

As described in Vedanta Chudamani, all the people in the world can be put under four categories:

The Guru's disciples, bhaktas (devotees), those who are indifferent to Him and those who are hostile to Him.

All these will be benefited by the existence of the Jnani — each in his own way and to various degrees.

The above insights of Sri Ramana (1879 - 1950), are known among spiritual seekers the world over and prized for their great inspirational power, which transcends all religious differences.

Amongst scholarly circles in the spiritual community of India, Sri Ramana is considered the most important mystic on the world stage during the 20th century because of the unprecedented timeliness of his emphasis on self-inquiry for direct Self-realization (of one's true nature). At the age of 17 he attained a profound experience of the true infinite Self without the guidance of a Guru and thereafter remained conscious of his identity with the Infinite at all times.

After some years of silent seclusion he finally began to reply to questions put to him by spiritual seekers all over the world. He followed no particular path or traditional system of teaching, but rather spoke directly from his own experience of non-duality. Sri Ramana wrote virtually nothing; his teaching took the form of conversations with visitors seeking his guidance (as transcribed by followers).