Locke
John Locke claimed that the principles of identity and contradiction were general ideas and only occurred to people after considerable abstract, philosophical thought. He characterized the principle of identity as "Whatsoever is, is." The principle of contradiction was stated as "It is impossible for the same thing to be and not to be." To Locke, these were not innate or a priori principles.
Read more about this topic: Law Of Thought
Famous quotes containing the word locke:
“Whenever the society is dissolved, it is certain the government of that society cannot remain ... that being as impossible, as for the frame of a house to subsist when the materials of it are scattered and dissipated by a whirlwind, or jumbled into a confused heap by an earthquake.”
—John Locke (1632–1704)
“If a child were kept in a place where he never saw any other but black and white till he were a man, he would have no more ideas of scarlet or green, than he that from his childhood never tasted an oyster, or a pineapple, has of those particular relishes.”
—John Locke (1632–1704)
“Knowledge being to be had only of visible and certain truth, error is not a fault of our knowledge, but a mistake of our judgment, giving assent to that which is not true.”
—John Locke (1632–1704)