[1] Sibley is best known for his 1959 paper "Aesthetic Concepts" (Philosophical Review, 68), and for "Seeking, Scrutinizing and Seeing" (Mind, 64, 1954).
His collected papers, including some posthumous, were published in 2001 as Approach To Aesthetics, together with a companion volume of critical and evaluative essays on his work.
This leads Sibley to think that grasping properties of given items requires the capability to exercise taste or aesthetic sensibility.
Topics and problems relating to taste thus became very important to Sibley's approach, and he returned to them through his career.
Here Sibley states the situation thus: "The programme that aestheticians must face is thus a large one, the charting of a huge areas neglected by other philosophers working within their customary bonds.