There seems to be no limit to which some men will go to avoid the labor of thinking. Thinking is hard work.

So far as the religion of the day is concerned, it is a damned fake ... Religion is all bunk.

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.

There is no substitute for hard work.

Of all my inventions, I liked the phonograph best

Non-violence leads to the highest ethics, which is the goal of all evolution. Until we stop harming all other living beings, we are still savages.

What is a college? An institute of learning. What is a business? An institute of learning. Life, itself, is an institute of learning.