Like all military theorists, Julian Corbett was a product of his time, influenced by ideas and traditions in his cultural and intellectual environment. Today Some Principles is widely regarded as a classic within sea-power literature and Corbett's most original contribution to military and naval thought. Corbett's greatest achievements, of course, were his books on naval history and naval theory, and his role as a public figure and advisor to important men is dwarfed in comparison. As for his theoretical development it may be argued that Corbett's thinking began in connection with his lectures at the Royal Navy War College, which led to the writing of the Green Pamphlet, his participation in Royal Navy war planning and finally Some Principles. In essence, Corbett seems to have drawn his theoretical influences equally from his study of British maritime history as well as the military thinking of Carl von Clausewitz and military theory.