What lies behind us and what lies ahead of us are tiny matters compared to what lies within us.

As reported by Quoteinvestigator on January 11, 2011 the quote appeared in "Meditations in Wall Street" (1940) by Wall Street trader Henry Stanley Haskins, "a Wall Street trader with a checkered background. The phrase was misattributed because the true author's name was initially withheld. In addition, the assignment of the maxim to a more prestigious individual, e.g., Emerson or Thoreau, made it more attractive and more believable as a nugget of wisdom." Emerson made a number of similar statements — in "The American Scholar," for example, he says "Give me insight into to-day, and you may have the antique and future worlds" — which probably increased the likelihood of misattribution.