Sayings about history by Becker and Maitland

In 1974, the now-deceased historian named Ferenc M. Szasz published a two-part article, “The Many Meanings of History,” in Vol. 7 of The History Teacher. Of the numerous sayings about history collected by Prof. Szasz, a couple of those aphorisms sen germane to my project of writing the biography of Hatton Sumners:
—->“History is the memory of things said and done.”
-Carl L. Becker (American historian, 1873-1945)
—->“It is very hard to remember that events now long in the past were once in the future.”
-Frederic William Maitland (British historian, 1850-1906)

In my archival research I’m seeking to recover and experience derivatively “the things [the subject] said and d[id]. 
And I’m trying to bear in mind the contingency of all the events along his timeline I’m creating, that is, that he did not know or anticipate everything that followed each event and each step he took.