From a 1922 issue of The American Magazine:
Don’t Fear to Attempt a Thing Just Because It Looks Big
Nothing is hard if you know what you are doing. A big job is often simply made up of many little jobs; if you know how to multiply one by ten, you can multiply it by one hundred
An interview with Major General George W. Goethals, Builder of the Panama Canal
Reported by Samuel Crowther
“I find,” said General Goethals, “that a great many people are afraid to try to do a big job, of any kind, simply because it is big. They let themselves be frightened by mere size; and this fear keeps them from accomplishing what they are perfectly able to do.