It was here, under the instruction of Mrs. Auld that young Frederick first learned the alphabet. However it did not last long, for when Mr. Auld discovered these lessons he strictly forbade it in words that left a profound impression on young Frederick; that while knowledge and learning of the world around him could bring him great unhappiness, it could also give him great power over his enslavers who preferred their chattel to remain ignorant and unthinking. "He must be able to detect no inconsistencies in slavery; he must be made to feel that slavery is right;"--Ch. 10, ibid. Frederick earnestly set forth a plan to continue to learn to read and write on the sly, aided by the white children he met on the streets and among the shipyards and docks. A book that especially left an impression on him was Caleb Bingham's The Columbian Orator (1797) which contains a poignant conversation between a master and his slave, who successfully argues for his freedom. In the city Frederick witnessed a kinder, gentler slave owner, averse to the public, severe, and humiliating treatments of slaves he had so often witnessed on the plantations.