SCIENCE. This word is sometimes defined by Plato to be that which assigns the causes of things; sometimes to be that the subjects of which have a perfectly stable essence; and together with this, he conjoins the assignation of cause from reasoning. Sometimes again he defines it to be that the principles of which are not hypotheses; and, according to this definition, he asserts that there is one science which ascends as far as to the principle of things. For this science considers that which is truly the principle as unhypothetic, has for its subject true being, and produces its reasonings from cause. According to the second definition, he calls dianoetic knowledge science; but according to the first alone, he assigns to physiology the appellation of science.