Imam Khomeini, "Islamic Government: Guardianship of the Jurist": "Were God not to appoint an Imām over men to maintain law and order, to serve the people faithfully as a vigilant trustee, religion would fall victim to obsolescence and decay. Its rites and institutions would vanish; the customs and ordinances of Islam would be transformed or even deformed. Heretical innovators would add things to religion and atheists and unbelievers would subtract things from it, presenting it to the Muslims in an inaccurate manner. For we see that men are prey to defects; they are not perfect, and must need to strive for perfection. Moreover, they disagree with each other, having varying inclinations and discordant states. If God, therefore, had not appointed over men one who would maintain order and law and protect the revelation brought by the Prophet (s), in the manner we have described, men would have fallen prey to corruption; the institutions, laws, customs, and ordinances of Islam would be transformed; and faith and its content would be completely changed, resulting in the corruption of all humanity.”
Guardianship of the Islamic Jurist: Divine Bounty for People
