Obscurantism
In the 19th century , in distinguishing the varieties of obscurantism found in metaphysics and theology from the "more subtle" obscurantism of the critical philosophy of Immanuel Kant , and of modern philosophical skepticism , Friedrich Nietzsche said: "The essential element in the black art of obscurantism is not that it wants to darken individual understanding , but that it wants to blacken our picture of the world , and darken our idea of existence . " 
<triplet> Immanuel Kant <subj> metaphysics <obj> field of work