Leonardo da Vinci Quote
I have seen motions of the air so furious that they have carried, mixed up in their course, the largest trees of the forest and whole roofs of great palaces, and I have seen the same fury bore a hole with a whirling movement digging out a gravel pit, and carrying gravel, sand and water more than half a mile through the air.
The Notebooks of Leonardo da Vinci (Richter, 1888) - XXI Letters. Personal Records. Dated Notes.