Once a person realizes he's ignorant, he no longer is. Some journey to the fountain of knowledge with a bucket, some with a thimble. You can't grasp anything you don't reach for. Don't cuss the alligators 'till you've crossed the river.
Habits make the best of servants, the worst of masters.
What is said may or may not be important. Who said it is rarely important. In personal communications, never quote. If you have swallowed a belief, it's now your belief. Planning and research weaken the fear of the unknown.