We might as well reasonably dispute whether it is the upper or the under blade of a pair of scissors that cuts a piece of paper, as whether value is governed by demand or supply.

The most valuable of all capital is that invested in human beings

Political Economy or Economics is a study of mankind in the ordinary business of life.

Capital is that part of wealth which is devoted to obtaining further wealth.

Knowledge is our most powerful engine of production.

In common use almost every word has many shades of meaning, and therefore needs to be interpreted by the context.

Civilized countries generally adopt gold or silver or both as money.

The price of every thing rises and falls from time to time and place to place; and with every such change the purchasing power of money changes so far as that thing goes.

The most reckless and treacherous of all theorists is he who professes to let facts and figures speak for themselves.

Nature's action is complex: and nothing is gained in the long run by pretending that it is simple, and trying to describe it in a series of elementary propositions.

In every age poets and social reformers have tried to stimulate the people of their own time to a nobler life by enchanting stories of the virtues of the heroes of old.

Never let the world know that you are sad or the world will let you down as well.

Put it on your forehead and you'll feel better in no time!

That person who declares that there is always something wrong is always doing something to make things wrong.

We should have a great many fewer disputes in the world if words were taken for what they are the signs of our ideas only and not for things themselves.

Courage, not compromise, brings the smile of God's approval.

I don't have any problem with being the guy whose album people put on when they're feeling sad.

Our wine is bitter, but it is our wine.

Before you marry, you have to get shot by an arrow and fall in love,” the boy explained. He paused thoughtfully. “But I don’t think the rest of it hurts as much as the beginning.

There's no misery in not being loved, only in not loving.

If you're a thinking person, the liver is interesting, but nothing is more intriguing than the brain.