A contemplation on robins' nests, sticktights, and the passage of time. I don't know what he had in mind when he said it. Maybe he meant history is biased. If so, he was right.
History books tend to be written about people who are white and important.
The stories of ordinary people don't get told very often. But if he meant that history doesn't matter, he was wrong. There's plenty to learn from history. About 15 years earlier, another important white guy, George Santayana, said that those who don't remember the past are condemned to relive it. I think most of us would agree with George.