One of the many blights on the contemporary intellectual landscape is the notion that we can leave epistemology behind: that is, to transcend the need to justify assertions of fact. Descartes is commonly blamed with the turn to epistemology as central; and, of course, we must leave the old, fussy Frenchman behind.
This stance amounts to nothing less than the abandonment of knowledge and to the encouragement of intellectual sloth of the most dangerous kind. When epistemology is neglected, nonsense increases and becomes increasingly accepted. One speaks and writes without any concern for the factuality of what one speaks or writes. This is what Harry Frankfort rightly calls "bullshit." (See his small book On Bullshit, which reviewed elsewhere on this blog and originally in The Denver Post.)
All that was written in order to present this quote from Francis Schaeffer from He is There, He is Not Silent (1972).
"Unless our epistemology is right, everything is going to be wrong."