> Spend meaningful, loving time together, and out in the world, as much of the small scale natural world as you can. Listen to their questions, answer when you can, learn the answers together when you can't.
Learn to tell them that you don't have all the answers, and there's a chance that the pair of you can work together to find it out, but there will always be some things that nobody knows yet.
But, most of all, I cam here to say - the foundation you're suggesting building is the strongest one we know of - safety in their emotions, having someone they can talk to, share their feelings with without ridicule or fear.
Start there and children always have someone they can talk to