True wisdom accepts advice and guidance. It feels reverence for sacred and venerable traditions, for the convictions of mankind on the great questions of life, and greater reverence still for an authority of faith that has received from God its warrant to be the teacher of mankind, and which has stood the test of time. True wisdom is convinced that continuity in human thinking and in knowledge is necessary. Life is short, and gives to the individual hardly time to attain mental maturity. Philosophy, and this is the matter before us at present,—philosophy can never be the work of a single person; it is the achievement of centuries; succeeding generations, with searching eye and careful hand, building further upon the achievement for which past ages have laid the foundations. By nailing together beams and boards the individual may erect a house good enough for a short time to serve his sports and pleasures; and if wrecked by the first storm, it may be replaced by another. But the building of massive and towering cathedrals that last for ages required the work of generations. And only skilful and experienced hands may do the work; haste is out of place here. The ancient sages of Greece, _Plato_, _Pythagoras_, and _Aristotle_, had this reverence for the philosophical and religious traditions of the past. These representatives of true wisdom did not consider philosophy and theology as the product of individual sagacity, they did not attempt to be free rulers in the realm of thought; on the contrary, they looked upon wisdom as the patrimony of the past, which it was their duty to preserve.