"Objectivist epistemology is not a form of Rationalism because Objectivism holds that all knowledge is derived from and validated by perception. Perception, according to Objectivism, is veridical; it does not deceive us. In fact, perception is the only form of awareness of reality there is, and therefore, it is the only source for knowledge. (For more on the validity of the senses, see David Kelley’s Evidence of The Senses
.) So in contrast to the Rationalists, Objectivists do not hold that knowledge of the world can be directly known merely through the use of reason."