 Logic, according to the Ramist and Stoic perspective, is a part of philosophy. Ramus rejected the Aristotelian definition of logic as a habitus instrumentalis, since an instrumental attitude could be considered to be an effect of logic but not equivalent to it. Instead he defined logic as the ars bene disserendi, the art of correctly discussing or analyzing something. Consequently, Ramus thought that logic was about being, which made the discipline of metaphysics superfluous.