[EForEndeavour]

> "Never memorize what you can look up."

I can look up all the definitions and grammar rules of English, but without memorizing them, I wouldn't be able to communicate with anyone around me.

[dunce2020]

I don't know any of the definitions, grammar rules of English yet I'm still able to effectively communicate with and understand others.

[warkdarrior]

If you are a native speaker of English, you learned those rules over your whole childhood, by example instead of being explicitly taught the rules.

[dunce2020]

Agreed - I learned examples, not rules.