Mistakes are the portal of discovery.— James Joyce

Get a good idea and stay with it. Dog it, and work at it until it’s done, and done right.— Walt Disney

I could not sleep when I got on the hunt for a new idea.— Abraham Lincoln

Let me tell you the secret that has led me to my goal. My strength lies solely in my tenacity.— Louis Pasteur

Neutralize resistance with persistence.— Unknown

When you have exhausted all other possibilities, remember this: you haven’t.— Thomas Edison

One idea leads to another. The teapot led Fulton to the steam engine, which led to the gas combustion engine, which led to the rocket propulsion […]

If I have been able to see further than others, it is because I have stood on the shoulders of giants.— Isaac Newton

Ideas build on ideas. The primitive wheel, lever, awl, pulley, diode and transistor built on each other to become the modern computer.— Dan Zadra