This is true and not something a literary education teaches you well. When you spend most of your time rightly reading books written long before you were born, you don’t see the point of a thought having value simply because it is recent. Compared to the great books, most things written recently aren’t very good, or won’t have relevance much past their date of publication. In the classroom, it doesn’t matter when something was said, just that it was said well.
In the battle of life outside the classroom, with wealth and reputation always on the line, the timing of a thought, phrase, or action is everything. We read the great books to remember them when we need to. And unless we speak up when we have to or act before its too late, having a wise thought becomes rather a curse than a blessing, because it becomes an occasion for regret. This is something Teddy Roosevelt likely knew from experience, both in regret and in victory.