Invention strictly speaking, is little more than a new combination of those images which have been previously gathered and deposited in the memory; nothing can come from nothing. – Sir Joshua Reynolds

Man is a shrewd inventor, and is ever taking the hint of a new machine from his own structure, adapting some secret of his own anatomy in iron, wood, and leather, to some required function in the work of the world. – Ralph Waldo Emerson

Fear is a great inventor. – Proverb