Friedrich August Von Hayek : I must say that I have been deeply gratified by reading a book [Hayek's "The Sensory Order"] of which I had not been aware when I wrote my little essay on group selection theory . . I was deeply impressed . . I recommend this book to your attention [i.e. The American Academy of Arts and Sciences], as an exercise in profound thinking by a man who simply considers knowledge for its own sake. What impressed me most is his understanding that the key to the problem of perception is to comprehend the nature of classification. Taxonomists have struggled with this problem many times, but I think von Hayek considered this problem in a broader sense. # Books - Reading # Science and Scientists # Arts and Artists