Moulton was a first-rate teacher and public speaker as well as an accomplished writer, and he ranked as one of the greatest masters of celestial mechanics, not only of his own generation but of all time.
Moulton ay isang unang-rate ng guro at pampublikong speaker pati na rin sa isang writer, at ranggo niya bilang isa sa mga pinakadakilang Masters ng makalangit mechanics, hindi lamang ng kanyang sariling angkan ngunit ng lahat ng oras.