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The second of Immanuel Kant's three critiques, "Critique of Practical Reason", published in 1788, is considered by many to be one of the most important works on the subject of moral philosophy ever written.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.