[we see that] science is eminently perfectible, and that each theory has constantly to give way to a fresh one.
I had no need of sails to drive me, nor oars nor wheels to push me, nor rails to give me a faster road. Air is what I wanted, that was all. Air surrounds me as water surrounds the submarine boat, and in it my propellers act like the screws of a steamer. That is how I solved the problem of aviation. That is what a balloon will never do, nor will any machine that is lighter than air.
![[we see that] science is eminently perfectible, and that each theory has constantly to give way to a fresh one.](http://cdn.quoteddaily.com/images/jules-verne/we-see-that-science-is-eminently-perfectible-and-that-each-theory-has-constantly-to-give-way-to-a-fresh-one.jpg)
