Thinking and learning to think

An instructional treatise examines the nature and cultivation of thinking and offers practical guidance for teachers to develop pupils' intellectual habits. It distinguishes stages of thought—clear (accurate apprehension), distinct (relational apperception), adequate (analytic and synthetic concept-making), and exhaustive (causal, specialized knowledge)—and emphasizes reflective reasoning over mere expression. The text critiques fleeting pedagogical fads, advocates professional teacher training and focused specialization, and outlines methods for making instructional aims concrete so learners acquire durable powers of analysis, synthesis, and disciplined inquiry.