Function

Definition and stakes

William James,  The Principles of Psychology, Volume 2…

“ If we admit, therefore, that our thoughts exist, we ought to admit that they exist after the fashion in which they appear, as things, namely, that supervene upon each other, sometimes with effort and sometimes with ease; the only questions being, is the effort where it exists a fixed function of the object, which the latter imposes on the thought? or is it such an independent 'variable' that with a constant object more or less of it may be made? ”
Source: Gutenberg

Portrait of Alfred North Whitehead Alfred North Whitehead,  The Function of Reason (1929)

“ The topic here considered — The Function of Reason — is one of the oldest topics for philosophical discussion. What is the function of Reason amid the welter of our mental experiences, amid our intuitions, our emotions, our purposes, our decisions of emphasis? In order to answer such a question we have to consider the nature of Reason, its essence. ”
Source: Wikisource

William James,  Essays in Radical Empiricism

“ Let me then immediately explain that I mean only to deny that the word stands for an entity, but to insist most emphatically that it does stand for a function. There is, I mean, no aboriginal stuff or quality of being, [4] contrasted with that of which material objects are made, out of which our thoughts of them are made; but there is a function in experience which thoughts perform, and for the performance of which this [Pg 4] quality of being is invoked. That function is knowing. ‘Consciousness’ is supposed necessary to explain the fact that things not only are, but get reported, are known. ”
Source: Gutenberg

Get perspective with Kwize: daily news enlightened by great literature