Johann Wolfgang von Geothe, a writer, poet, philosopher, and scientist, was a man of many talents and interests. He lived in Germany in during the mid 1700's to the early 1800's. I found this quotation quite randomly, but love it:
"Whatever you can do, or dream, you can begin it. Boldness has genius, power and magic in it." Goethe
And, in reading about Goethe, I found that this man exemplifies this quotation. An inspirational historical figure, for sure!