"In Nanak's time Indian society was based on caste and was divided into countless watertight Compartments. Men were considered high and low on account of their birth and not according to their deeds. Equality of human beings was a dream. There was no spirit of national unity except feelings of community fellowship. In Nanak's views men's love of God was the criterion to judge whether a person was good or bad, high or low. As the caste system was not based on divine love, he condemned it. Nanak aimed at creating a casteless and classless society similar to the modern type of socialist society in which all were equal and where one member did not exploit the other. Nanak insisted that every Sikh house should serve as a place of love and devotion, a true guest house (Sach dharamshala). Every Sikh was enjoined to welcome a traveller or a needy person and to share his meals and other comforts with him. "Guru Nanak aimed at uplifting the individual as well as building a nation."