Brutes abstract not. -- If it may be doubted, whether beasts compound and enlarge their ideas, that way, to any degree; this, I think, I may be positive in, that the power of abstracting is not at all in them; and that the having of general ideas is that which puts a perfect distinction betwixt man and brutes, and is an excellency which the faculties of brutes do by no means attain to.
John LockeIf the innocent honest Man must quietly quit all he has for Peace sake, to him who will lay violent hands upon it, I desire it may be considered what kind of Peace there will be in the World, which consists only in Violence and Rapine; and which is to be maintained only for the benefit of Robbers and Oppressors.
John LockeLet us suppose the mind to be, as we say, white paper, void of all characters, without any ideas; how comes it to be furnished? Whence comes it by that vast store which the busy and boundless fancy of man has painted on it with an almost endless variety? Whence has it all the materials of reason and knowledge? To this I answer, in one word, from experience.
John Locke