Nietzsche on pluralism

In essentials they were already the same thoughts which I now take up again in the treatises at hand: let us hope that the long period in between has been good for them, that they have become more mature, brighter, stronger, more perfect! That I still hold fast to them today, that they themselves have, in the meantime, held to each other ever more firmly, indeed have grown into each other and become intermeshed, strengthens within me the cheerful confidence that they came about not singly, not arbitrarily, not sporadically, but rather from the beginning arose out of a common root, out of a basic will of knowledge which commands from deep within, speaking ever more precisely, demanding something ever more precise. For this alone is fitting for a philosopher. We have no right to be single in anything: we may neither err singly nor hit upon the truth singly. Rather, with the necessity with which a tree bears its fruit our thoughts grow out of us, our values, our yes’s and no’s and if’s and whether’s—the whole lot related and connected among themselves, witnesses to one will, one health, one earthly kingdom, one sun.—And do they taste good to you, these fruits of ours?—But of what concern is that to the trees! Of what concern is that to us, us philosophers! …

GM Preface, §2

quote nietzsche