Air power Quote by Frontinus

I will ignore all ideas for new works on engines of war, the invention of which has reached its limits and for whose improvements…

— Sextus Julius Frontinus

Inventions have long since reached their limit, and I see no hope for further development.

— Ursula K. Le Guin

Inventions reached their limit long ago, and I see no hope for further development.

— Frontinus

With whomsoever or wheresoever may rest the present causes of difficulty that apparently exist towards either the completion of the old engine, or the…

— Ada Lovelace

In my opinion, all previous advances in the various lines of invention will appear totally insignificant when compared with those which the present century…

— Charles Holland Duell

Our inventions are wont to be pretty toys, which distract our attention from serious things. They are but improved means to an unimproved end.

— Henry David Thoreau

Let there be no innovation; keep to what has been handed down.

— Pope Stephen I

Where a new invention promises to be useful, it ought to be tried.

— Thomas Jefferson

A lot of great inventions are just little improvements on past ideas.

— Ken Hakuta

This would only come if you have a revolutionary change in technology like the jet brought about.

— Adolf Galland

We should have more invention.

— Nathan Myhrvold

Nothing is going to remain the way it is. Let us, in the present, study the past, so as to invent the future.

— Augusto Boal