While still a pagan, but moved by his desire for truth, the philosopher _Justin_ went to the schools of his day to seek the solution of his doubts and queries. First he turned to a Stoic, but as he taught nothing of God, _Justin_ was unsatisfied. He next went to a Peripatetic teacher, then to a Pythagorean, but failed to find what he desired. The Platonist at last gave him something. Walking alone along the beach, and musing over _Plato’s_ principles, he met an old man who referred him to the truth of Christianity, to the Prophets and the Apostles: “They alone have seen the truth and proclaimed it unto man, they were afraid of no one, knew no fear; yielded to no opinion; filled with the Holy Ghost, they spoke only what they saw and heard. The Scriptures are still extant, and he who takes them up will find in them a treasure of information about principles and ultimate things, and all else the philosopher must know, if he believes them.”(14) And _Justin_ found truth and peace, and bowed to the yoke of the doctrine of Jesus Christ. What a striking contrast between this serious love of truth in the days of passing heathendom, and the uncontrolled thinking of so many in our Christian age! To them truth is no longer a sacred treasure, a yoke to be assumed in reverence; it has become the plaything of their impressions and inclinations. Indeed, they consider it a burden to accept the old Christian truth, with which they meet on all their ways. Chapter III. The Bitter Fruit. The Vocation of Science. Science is, and ever was, an influential factor operating upon the thought, aims, and actions of man. Hence science must remain conscious of its vocation. First of all it is to hold aloft and preserve the _spiritual possessions of mankind_. True, science must also progress; but progress means growth, which presupposes the preservation of what has been received from of old. This applies pre-eminently to the philosophical-religious patrimony of the past; no error could be more fatal than to presume that each generation must start from the beginning, that the foundations, which have safely supported human life for centuries, must be obsolete because human nature is suddenly considered changed.