The second helpful notion mimics Galileo’s50 conclusion that scientific reality is often revealed only by math as if math was the language of God. Ga… - Charlie Munger

Without numerical fluency , in the part of life most of us inhibit , you are like a one-legged man in an ass-kicking contest.

The first helpful notion is that it is usually best to simplify problems by deciding big no-brainer questions first. The second helpful notion mimics Galileo’s50 conclusion that scientific reality is often revealed only by math as if math was the language of God.

The first helpful notion is that it is usually best to simplify problems by deciding big no-brainer questions first.

Without numerical fluency … you are like a one-legged man in an ass-kicking contest

"To (Cicero), pride in a job well done is vastly constructive. For instance, it motivates good conduct in early life because, in remembrance, you can make yourself happier when old. To which, aided by modern knowledge, I would add "and, besides, as you pat yourself on the back for behaving well, you will improve your future conduct.

And he will also suffer from the psychological defect caught by the proverb “To a man with a hammer, every problem looks like a nail.” The fifth helpful notion is that really big effects, lollapalooza effects, will often come only from large combinations of factors.

The best armour of old age is a well spent life preceding it.