None of my inventions came by accident. I see a worthwhile need to be met and I make trial after trial until it comes. What it boils down to is one per cent inspiration and ninety-nine per cent perspiration.

The man who doesn’t make up his mind to cultivate the habit of thinking misses the greatest pleasure in life.

I was always afraid of things that worked the first time. Long experience proved that there were great drawbacks found generally before they could be got commercial; but here was something there was no doubt of.

I didn't fail 1000 times. The light bulb was an invention with 1000 steps.

Be brave as your fathers before you. Have faith and go forward.

The greatest discoveries will be along spiritual lines. This is the field where miracles are going to happen. Spiritual power is the greatest underdeveloped power and has the greatest future.

Focus on how the end-user customers perceive the impact of your innovation - rather than on how you, the innovators, perceive it.