Men advanced far in knowledge do not love to repeat the elements of their art, and I am not certain that even of the elements, as he will deliver them, connected with inferences and mingled with reflections, you are a very capable auditress.
 Samuel Johnson, The History of Rasselas, Prince of Abissinia (1759). copy citation

Context

“but next day Pekuah told him she had now found an honest pretence for a visit to the astronomer, for she would solicit permission to continue under him the studies in which she had been initiated by the Arab, and the Princess might go with her, either as a fellow-student, or because a woman could not decently come alone. “I am afraid,” said Imlac, “that he will soon be weary of your company. Men advanced far in knowledge do not love to repeat the elements of their art, and I am not certain that even of the elements, as he will deliver them, connected with inferences and mingled with reflections, you are a very capable auditress.” “That,” said Pekuah, “must be my care. I ask of you only to take me thither. My knowledge is perhaps more than you imagine it, and by concurring always with his opinions I shall make him think it greater than it is.”” source