I never perfected an invention that I did not think about in terms of the service it might give others... I find out what the world needs, then I proceed to invent.

Barring serious accidents, if you are not preoccupied with worry and you work hard, you can look forward to a reasonably lengthy existence.... Its not the hard work that kills, its the worrying that kills.

Life's most soothing things are a child's goodnight and sweet music.

Books will soon be obsolete in the schools... Our school system will be completely changed in the next ten years.

Until man duplicates a blade of grass, nature can laugh at his so called scientific knowledge.

I never once failed at making a light bulb. I just found out 99 ways not to make one.

When we learn how to store electricity, we will cease being apes ourselves; until then we are tailless orangutans. You see, we should utilize natural forces and thus get all of our power. Sunshine is a form of energy, and the winds and the tides are manifestations of energy. Do we use them? Oh, no! We burn up wood and coal, as renters burn up the front fence for fuel. We live like squatters, not as if we owned the property.