Then it occurred to her (Elizabeth Keckley) that if Tad (Lincoln's son) had been a colored boy rather than the son of a president, and a teacher had found him so difficult to instruct, he would have been ridiculed as a dunce and held up as evidence of the inferiority of the entire race. Tad was bright; Elizabeth knew that well, and she was sure that with proper instruction and hard work, a glimmer of his father's genius would show in him too. But Elizabeth knew many black boys Tad's age who could read and write beautifully, and yet the myth of inferiority persisted. The unfairness of the assumptions stung. If a white child appeared dull, the entire race was deemed unintelligent. It seemed to Elizabeth that if one race should not judged by a single example, then neither should any other.