Indians celebrate today as Guru Poornima (Full moon). It is the day when we remember and salute the masters who took part in our development.
Here is a definition of Master (Guru)
Chinmayam Vyaapi Yatsarvam
Trailokya Sacharaa Charam
TatPadam Darshitam Yena
Tasmai Sri Gurave Namaha.
That revered Man who directs my attention to the energy existing in all mobile and im-mobile, I salute such Guru