it is to be observed that the most perfect possible knowledge of nature is the corrected statement of the problem of metaphysics. Therefore no one ought to venture upon this without having first acquired a knowledge of all the branches of natural science, which, though general, shall be thorough, clear, and connected. For the problem must precede its solution. Then, however, the investigator must turn his glance inward; for the intellectual and ethical phenomena are more important than the physical, in the same proportion as, for example, animal magnetism is a far more important phenomenon than mineral magnetism. The last fundamental secret man carries within himself, and this is accessible to him in the most immediate manner; therefore it is only here that he can hope to find the key to the riddle of the world and gain a clue to the nature of all things. The special province of metaphysics thus certainly lies in what has been called mental philosophy.
"The ranks of living creatures thou dost lead
Before me, teaching me to know my brothers
In air and water and the silent wood:
...
Then to the cave secure thou leadest me,
Then show'st me mine own self, and in my breast
The deep, mysterious miracles unfold."[1]
Finally, then, as regards the source or the foundation of metaphysical knowledge, I have already declared myself above to be opposed to the assumption, which is even repeated by Kant, that it must lie in mere conceptions. In no knowledge can conceptions be what is first; for they are always derived from some perception. What has led, however, to that assumption is probably the example of mathematics. Mathematics can leave perception altogether, and, as is especially the case in algebra, trigonometry, and analysis, can operate with purely abstract conceptions, nay, with conceptions which are represented
1 [Bayard Taylor's translation of Faust, vol. i. 180. Trs.]
- ↑ 1
