“Thinking is one thing no one has ever been able to tax.”

“We should all be concerned about the future because we will have to spend the rest of our lives there.”

“The world hates change, yet it is the only thing that has brought progress.”

“One fails forward toward success.”

“An inventor is simply a fellow who doesn't take his education too seriously.”

“The opportunities of man are limited only by his imagination. But so few have imagination that there are ten thousand fiddlers to one composer.”

“Thinking is one thing no one has ever been able to tax.”

“Keep on going and the chances are you will stumble on something, perhaps when you are least expecting it. I have never heard of anyone stumbling on something sitting down.”

“You can't have a better tomorrow if you are thinking about yesterday all the time.”

“Every time you tear a leaf off a calendar, you present a new place for new ideas and progress.”

“A person must have a certain amount of intelligent ignorance to get anywhere.”