Kant and his "Critical Philosophy" held in their time that our intellect perceives only the phenomena of nature, while the mystic law of causality, according to him, points to a hidden being, which cannot be perceived but must be believed, which we may venerate but must leave undisturbed by science. Schopenhauer, his brilliant successor, who in spite of his brilliancy did not materially advance the cause of philosophy, mystified the problem of causality by his discovery that the nature of the world is will power. These teachings of Kant and Schopenhauer are dressed up anew and mixed with the recent discoveries of science by Noire. But he entirely ignores the work of Schelling and Hegel, who by their criticisms have made evident the lack of logic in the Kantian separation of phenomenon (apparition) from noumenon (essence), of cause from effect. You are familiar with the silly question whether Goethe or Schiller, Shakespeare or Byron, is the greater poet, and you will not think that I am trying to elevate Hegel above Kant or Kant above Hegel. They are just two cogs on the spinning wheel of history. If the second crushes what the first has cracked, such is the result of their succession. Natural science is also a valuable co-operator in the solution of the world problem, not so much by digging in the logical tunnel itself, or making amateur excursions into the fields of philosophy or metaphysics, but because it elucidates and renders tangible the special object of logic in such far-embracing objects as the unity of natural forces or of animal species. The scientific presentation of this special object, however, requires a brain armed with the full equipment of the historical outcome of philosophy. Now you must not believe that I am conceited enough to place my own little personality on the pedestal as the only true philosopher. I am too well aware of my shortcomings as a self-educated man. But seeing that I have striven earnestly and without prejudice since my young days to understand the high object of my studies, I feel in my heart a certain confidence in my qualification to deal with it. On the other hand, I know my lack of that sort of learning which is required in order to be able to present the scientifically much-courted nature of the human mind in such a form and with such emphasis as its sublime character deserves. And if I, nevertheless, come before the public on various occasions with my tentative works, I offer as an excuse that hitherto the Messiah has not appeared who will come after me and whose John the Baptist I should like to be.