Kindness is a type of behaviour marked by acts of generosity, consideration, or concern for others, without having an expectation of praise or reward. Kindness was one of the main topics in the Bible. In Book II of "Rhetoric", Aristotle defines kindness as "helpfulness towards someone in need, not in return for anything, nor for the advantage of the helper himself, but for that of the person helped". Nietzsche considered kindness and love to be the "most curative herbs and agents in human intercourse". Kindness is considered to be one of the Knightly Virtues. In Meher Baba's teachings, God is synonymous with kindness: "God is so kind that it is impossible to imagine His unbounded kindness!"
In human mating choice, studies suggest that both men and women value kindness and intelligence in their prospective mates, along with physical appearance, attractiveness, social status, and age.