To lower tensions during a dispute, mirror the other person’s body language. - Kevin Kelly

A universal law of economics says the moment something becomes free and ubiquitous, its position in the economic equation suddenly inverts. When nighttime electrical lighting was new and scarce, it was the poor who burned common candles. Later, when electricity became easily accessible and practically free, our preference flipped and candles at dinner became a sign of luxury.

You will complete your mission in life when you figure out what your mission in life is. Your purpose is to discover your purpose. This is not a paradox. This is the way.

Following the free also works in the other direction. If one way to increase product value is to make products free, then many things now free may contain potential value not yet perceived.