German philosopher born in the 1720s. Kant creatively synthesized the theories of the empiricists and the rationalists, and thus concluded that our perceptions of time and space are based on synthetic a priori knowledge.
Kant deduced the categorical imperative-- the non-consequentialist moral theory that states we should only act in ways that can be universalized-- from his theory that humans are the only agents of pure reason.
A german philosopher from the 1700s, Immanuel Kant pontificated at length about what people should do. Manny derived the law of universalizability, which states if something can be applied universally, it must be good. Manny also claimed that we can never know the true motivations of our actions, which only muddles ethical theory and provides an excuse for unethical conduct.
In Kantian ethics, lying to save someone's life is morally wrong, as lying cannot be universalized.
Due to an Emerson College teacher's repeated use of it, as well as its unfortunate similarity to this word, Kant has come to mean "cunt". May only be used in extreme anger, and may NEVER be used to describe a person ("Julie is such a Kant").