It is said that a Gnani Purush (Enlightened Being) does not exist in the current time cycle. This is not so. But those who are well versed in scriptures are not Gnanis. A Gnani Purush is not only Self-Realized, but has the spiritual power to enlighten others as well. Only a Gnani Purush who is liberated from all worldly attachments, has the power to liberate others. Self Realization or liberation cannot be acquired through reading scriptures, even if the scriptures themselves were the words of a Gnani. Self Realization can only be acquired through direct contact with the living Gnani. Such a being, a Gnani Purush, existed not too long ago, amongst us. His name was Ambalal Muljibhai Patel (lovingly known as "Dadashri" or "Dada Bhagwan").
Param Pujya Dadashri used to say that there is a big difference between a Gnani Purush and a Guru! A Guru is the one who has not yet realized his Soul, but is engaged in merit karmas and is on his way to liberation. He is helpful to people seeking a better worldly life. However, for liberation, one would need a Gnani Purush, a Self-Realized being!
Here are some of the qualities of a Gnani Purush. You are bound to observe them in Param Pujya Dadashri, Pujya Niruma and Pujya Deepakbhai.
A Gnani Purush knows the qualities of the Self and the non-Self and so he can separate the two.