What you are will show in what you do.

Show me a thoroughly satisfied man and I will show you a failure.

Restlessness is discontent and discontent is the first necessity of progress. Show me a thoroughly satisfied man and I will show you a failure.

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

Just because something doesn't do what you planned it to do doesn't mean it's useless.

Be courageous. I have seen many depressions in business. Always America has emerged from these stronger and more prosperous. Be brave as your fathers before you. Have faith! Go forward!