CHANDIGARH: Extending greetings to the people of Punjab and Chandigarh on the auspicious Gurpurb of the first Guru, Sri Guru Nanak Dev Ji, the Punjab Governor and Administrator, Union Territory, Chandigarh, Shri Banwarilal Purohit said that Guru Nanak was not only the first Guru of the Sikhs but also a 'Guru' to the entire world. He envisioned the welfare of all humanity and considered all castes to be equal. Guru Nanak stressed on the women empowerment and respect to them.