Guru Purnima (गुरुपौर्णिमा )

Guru Purnima also known  as Vyas Purnima. महर्षि व्यास wrote several books on various subjects. There is no topic in the world, which never touched upon by महर्षि व्यास. That's the reason its said that, व्यासोचिस्तम जगत्सर्वं !. Guru is one, who is not लघु. Mean Guru is never small. Guru is light house, power house and so on..

As per Upnishad, Gyan should not be given to anyone. There should be pre-qualification criteria. It is very well defined in Upnishad and Srimad Bhagvat Geeta. Geeta says," इदं ते नातपस्काय, ना भक्ताय कदाचन: !, न च शुश्रूषावे वाच्यं न च मा योभ्यासुयती !!. गीता १८-७.

आत्मज्ञान (Knowledge about Soul) should not be given to, one who does made any concentrated efforts in getting knowledge. One who is not believe in GOD. One who is not ready to listen anything about GOD, his existence and presence in the Universe. Finally, to one who is against GOD, Who challenges GOD's existence in his/her capacity. Those four types of human are not qualified to be given गुह्यज्ञान.

It should be very clear to every one's mind that, if at all I have to get knowledge from Guru. I should have तप, I should not be away from God any moment. भक्त जो भगवंत पासून विभक्त नाही.  Also always keen to listen from Guru. Will have 100% trust in God. That's the key....
Greek Philosopher सॉक्रेटिस, used to give knowledge to anyone and everyone. Whom so he find on road, near his house or any place. Finally, he had been sent behind bar for several years. He was Poisoned.
That's what Srimad Bhagvat Geeta emphasized, to check pre-qualification for knowledge transfer.....