Just because something doesn’t do what you planned it to do doesn’t mean it’s useless.
Thomas A. Edison

There is no expedient to which a man will not go to avoid the labor of thinking.
Thomas A. Edison

To invent, you need a good imagination and a pile of junk.
Thomas A. Edison

If I find 10,000 ways something won’t work, I haven’t failed. I am not discouraged, because every wrong attempt discarded is another step forward.
Thomas A. Edison

Genius is one per cent inspiration, ninety-nine per cent perspiration.
Thomas A. Edison