Add to ORKGThis article explains that and how Robert S. Hartman and Brand Blanshard, two of the most insightful philosophers of the 20th Century, were complete rationalists in their approach to philosophical problems, especially those in value theory. They both rejected emotive, subjectivist, and relativistic approaches to ethical values. Both were convinced that “intrinsic goodness” is the most important, meaningful, and basic of all ethical or moral concepts. Just how they understood reasonableness and the task of philosophers is explored. Significant differences between the two on the meaning of “good” are examined. Blanshard’s equating of “intrinsically good” with “fulfillment and pleasure” is critiqued, and Hartman’s alternative to this is presen...