What do we do in order to become skilful in the exercise of an art? If we wish to become proficient in performing an unlimited series of complicated acts, what course do we adopt in order to obtain such proficiency? The first answer which suggests itself is to the effect that such skill or proficiency is acquired by a process called study or learning. We learn to do it; we study the art; we follow a course and all that the course implies; we attend lectures, we take lessons, we read the text-book containing the principles (rudimentary or otherwise) which embody the precepts relating to that art, we perform exercises; in short, we become students. Very well; let us accept the answer for what it is worth and proceed to formulate a series of supplementary questions: What are the qualities which mark the successful student? What sort of people are likely to study with success? Of what people can we predict failure or incapacity for making progress? Most people will answer: The student must possess intelligence, assiduity, and perseverance; if at the same time he should be �gifted,� his progress will be much greater than the progress of one who possesses no �natural talents� for learning the art in question.