Schopenhauer
Schopenhauer disagreed with Kant's critics and stated that it is absurd to assume that phenomena have no basis. Schopenhauer proposed that we cannot know the thing in itself as though it is a cause of phenomena. Instead, he said that we can know it by knowing our own body, which is the only thing that we can know at the same time as both a phenomenon and a thing in itself.
When we become conscious of ourself, we realize that our essential qualities are endless urging, craving, striving, wanting, and desiring. These are characteristics of that which we call our will. Schopenhauer affirmed that we can legitimately think that all other phenomena are also essentially and basically will. According to him, will "is the innermost essence, the kernel, of every particular thing and also of the whole. It appears in every blindly acting force of nature, and also in the deliberate conduct of man…." Schopenhauer said that his predecessors mistakenly thought that the will depends on knowledge. According to him, though, the will is primary and uses knowledge in order to find an object that will satisfy its craving. That which, in us, we call will is Kant's "thing in itself", according to Schopenhauer.
Arthur Schopenhauer put the puzzle of free will and moral responsibility in these terms:
Everyone believes himself a priori to be perfectly free, even in his individual actions, and thinks that at every moment he can commence another manner of life. ... But a posteriori, through experience, he finds to his astonishment that he is not free, but subjected to necessity, that in spite of all his resolutions and reflections he does not change his conduct, and that from the beginning of his life to the end of it, he must carry out the very character which he himself condemns...
In his On the Freedom of the Will, Schopenhauer stated, "You can do what you will, but in any given moment of your life you can will only one definite thing and absolutely nothing other than that one thing."
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