Discussing Arthur Schopenhauer’s On the Fourfold Root of the Principle of Sufficient Reason, published in 1847 (as an expansion of his doctoral thesis from 1813). What kinds of explanations are legitimate? S. thought that causal and logical explanations are often confused, resulting in philosophical errors. In laying out the four types of explanation — the four versions of the principle of sufficient reason — he clearly elaborates his modernized Kantian epistemology.
End song: “The Answer,” by New People from Impossible Things (2011)