What matters is not the quantity of fiber-optic cable but the quality, or rather its productivity.

FORBES: A fiber niche is nice

Neither knew what the proper quantity was, and this is logical considering the infinite inputs and decisions that comprise what we call an economy.

FORBES: Brendan Brown, and The Global Curse Of the Federal Reserve

Because it does not matter what the total quantity of money in the economy is.

FORBES: Yes, Printing Money Can Create Wealth

If not, the quantity of growth is mainly what counts.

ECONOMIST: Economics focus: Quantity and quality | The

Since every isotope that spews gamma or X rays or charged particles does so in a unique way--an atomic fingerprint, of sorts--the color and intensity of the flash tells the detector which isotope is present and in what quantity.

FORBES: Stopping Porta-Nukes

In contrast, the Internet is typically priced based on quantity of bandwidth, regardless of what kind of content is being consumed.

FORBES: More on Bandwidth Caps and Price Discrimination

What remains is a large quantity of tiny whiting, which are too small to catch, and the nethrops, which lives in a muddy burrow.

ECONOMIST: Fishing in Scotland

What requires higher-order thinking is the task of dietary budgeting--monitoring both the quality and quantity of food to ensure that one gets the necessary nourishment without overeating.

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