“I am what I am today due to many people whom I have met, interacted and loved in my lifetime till now”

Maatru Devo Bhava
Pitru Devo Bhava
Achaarya Devo Bhava
Atithi Devo Bhava

(Respects to Mother, Father, Guru and Guest. They are all forms of God)

Source : Taittiriya Upanishad

Gurur-Brahmaa Gurur-Vishnur-Gururdevo Maheshvara: |
Guru: Sakshath Param Brahma Tasmai Shrii-Gurave Nama: ||

(The teacher is creator Brahma; he is also preserver Vishnu; he is also the destroyer Siva and he is the source of the Absolute)

Source : Guru Gita