The illiterate of the 21st century will not be those who cannot read and write, but those who cannot learn, unlearn, and relearn.
For those who believe in God, most of the big questions are answered. But for those of us who can't readily accept the God formula, the big answers don't remain stone-written. We adjust to new conditions and discoveries. We are pliable. Love need not be a command or faith a dictum. I am my own God. We are here to unlearn the teachings of the church, state, and our educational system. We are here to drink beer. We are here to kill war. We are here to laugh at the odds and live our lives so well that Death will tremble to take us.
An adult who ceases after youth to unlearn and relearn his facts and to reconsider his opinions... is a menace to a democratic community.
The shortest and surest way of arriving at real knowledge is to unlearn the lessons we have been taught, to mount the first principles, and take nobody's word about them.