Giordano Bruno, 1548-1600.--Benedict de Spinoza, 1632-1677.--A disciple of Spinoza (an illustration)--David Hume, 1711-1776.--Immanuel Kant, 1724-1804.--Arthur Schopenhauer, 1788-1860.--Friederich [!] Nietzsche, 1844-1900.--Pragmatism.--Progress.--Royce on love and loyalty.--Retrospect and prospect.