The Law Of Diminishing Returns

At some point, more of the same stops paying off … it is called the law of diminishing returns.

via Sketchplanations

Nature (and common sense) reminds us that equilibrium is important. For example, when you exercise too much, you get injured; when you drink too much water, you get poisoned; etc. 

This concept applies almost everywhere.

• It's why diversification is so important in portfolio construction theory. 
• Or, why you don't want to put all your eggs in one basket (concentrating your risk).
• And, my favorite, it's also why you shouldn't only eat vegetables.

A related nugget of wisdom from the extreme … Too much of a good thing is a bad thing! 

And of course … Be moderate in everything, including moderation.