For just as the good is the mind's good only because it is agreeable to it, so the truth is the truth only through the relation of equality or resemblance found between two or more things be it between two or more objects, as between an ell and some cloth, for the cloth is an ell because of the equality between the ell and the cloth, or between two or more ideas, as between the two ideas of three and three and the idea of six, for three and three are six because of the equality between the two ideas of three and three and the idea of six, or finally, between ideas and things, as when ideas represent what things are; for when I say that a sun exists, my proposition is true because the ideas I have of existence and the sun represent that the sun exists, and the sun truly exists.