Guru Brahma

Guru Brahma Gurur Vishnu
Guru Devo Maheshwaraha
Guru Saakshat Para Brahma
Tasmai Sree Gurave Namaha 

Meaning:

Guru is verily the representative of Brahma, Vishnu and Shiva.

 He creates, sustains knowledge and destroys the weeds of ignorance.

 I salute such a Guru.