If, then, the love of knowledge produces immortality, and leads the kingly man near to God the King, knowledge ought to be sought till it is found. Now seeking is an effort at grasping, and finds the subject by means of certain signs. And discovery is the end and cessation of inquiry, which has now its object in its grasp. And this is knowledge. And this discovery, properly so called, is knowledge, which is the apprehension of the object of search. And they say that a proof is either the antecedent, or the coincident, or the consequent. The discovery, then, of what is sought respecting God, is the teaching through the Son; and the proof of our Saviour being the very Son of God is the prophecies which preceded His coming, announcing Him; and the testimonies regarding Him which attended His birth in the world; in addition, His powers proclaimed and openly shown after His ascension.