Waste is worse than loss. The time is coming when every person who lays claim to ability will keep the question of waste before him constantly. The scope of thrift is limitless.

If I had not had so much ambition and not tried to do so many things, I probably would have been happier, but less useful.

I have always consistently opposed high-tension and alternating systems of electric lighting...not only on account of danger, but because of their general unreliability and unsuitability for any general system of distribution.

The dove is my emblem.

The only thing I use my body for is to carry my brain around.

His genius he was quite content in one brief sentence to define; Of inspiration one percent, of perspiration, ninety nine.

Fools call wise men fools. A wise man never calls any man a fool.