Coroll.), therefore (I.Ax.

vi.) they are all true.

Q.E.D.
PROP.XXXIII.

There is nothing positive in ideas, which causes them to be called false.
Proof .-- If this be denied, conceive, if possible, a positive mode of thinking, which should constitute the distinctive quality of falsehood.

Such a mode of thinking cannot be in God (II.
xxxii.); external to God it cannot be or be conceived (I.xv.).
Therefore there is nothing positive in ideas which causes them to be called false.