 What makes the field even more amorphous is the existence of works on educational topics, written by well-regarded philosophers who have made major contributions to their discipline; these educational reflections have little or no philosophical content, illustrating the truth that philosophers do not always write philosophy. However, despite this, works in this genre have often been treated as contributions to philosophy of education. (Examples include John Locke’s Some Thoughts Concerning Education [1693] and Bertrand Russell’s rollicking pieces written primarily to raise funds to support a progressive school he ran with his  wife. (See Park 1965.)