Lasting knowledge

The point, then, isn’t that you should watch less CNBC and read more Ben Graham. It’s that if you read more Ben Graham you’ll have an easier time understanding what you should or shouldn’t pay attention to on CNBC. This applies to most fields.

I try to ask when I’m reading: Will I care about this a year from now? Ten years from now? Eighty years from now?
It’s fine if the answer is “no,” even a lot of the time. But if you’re honest with yourself you may begin to steer toward the enduring bits of knowledge.

Expiring vs. Long-Term Knowledge

A must read