Jainism was defined (or maybe summarized) by our tour guide as the religion of the wealthy.
A more scholarly description would be that Jainism is an ancient Indian religion, sometimes regarded as an offshoot of Hinduism. Jains emphasize the importance of not injuring living beings, and their code of ethics is based on sympathy and compassion for all forms of life. They also believe in karma but not in any deity. It is a monastic, ascetic religion. (Thanks Farlex!)