Most people give off as much heat as a 100 watt bulb, but not as much light.
— Unknown

I can't stand a naked light bulb, any more than I can a rude remark or a vulgar action.
Tennessee (Thomas Lanier) Williams bulb quote

To me, lighting really sets the mood for a room. A 40 watt bulb in a cheap lamp is the same as a 40 watt bulb in an expensive one.
— Edward Walker

The killer app that got the world ready for appliances was the light bulb. So the light bulb is what wired the world. And they weren't thinking about appliances when they wired the world. They were really thinking about - they weren't putting electricity into the home. They were putting lighting into the home.
— Jeff Bezos

This revolution, the information revoultion, is a revolution of free energy as well, but of another kind: free intellectual energy. It's very crude today, yet our Macintosh computer takes less power than a 100-watt bulb to run it and it can save you hours a day. What will it be able to do ten or 20 years from now, or 50 years from now?
— Steve Jobs