The point is, you must show them how to live and not just…

““The point is, you must show them how to live and not just teach them theory while contradicting yourself in practice, because cynicism, hypocrisy and insincerity are adult character traits that children have no way of appreciating. Children learn by imitating our behavior, and if it contradicts our thinking then at best they learn to simply ignore what we say and at worst become troubled by it. Suppose you teach them about the environmental devastation they will witness during their lives, and explain to them that it is being caused by burning fossil fuels, and that during their lives fossil fuels will disappear altogether with nothing to replace them … while continuing to burn hundreds of gallons of heating oil to heat an oversized house, driving all over creation in an oversized vehicle, jetting off to the tropics on brief winter holidays and going on shopping sprees to buy on a whim things you don’t need. Then what you would be teaching them is that you can’t be trusted. And this doesn’t help them; instead, it damages their spirit. It is better to have an ignorant fool for a parent than a well-informed hypocrite because being a fool is not a moral failing. Fools deserve pity and mercy; hypocrites—neither.””

— Dmitry Orlov