It is one of the chief skills of the philosopher not to occupy himself with questions which do not concern him.[Es ist eine Hauptkunst des Philosophen, sich nicht mit Fragen zu beschäftigen, die ihn nichts angehen.]
All the world’s great philosophers have been lovers of God and believers in man’s inner goodness. To know the history of philosophy is to know that the highest thinkers of the ages, the seers of the tribes and the nations, have been optimists. The growth of philosophy is the story of man’s spiritual life.