It makes the gears of the brain mesh more easily. Never withhold praise and reassurance. In fact, frequent praise and reassurance will make those special moments come more often. Have music in your house. Anecdotal studies have suggested that workers do better work when Mozart is playing, and children learn more.
Many children study better when listening to music of the right kind.
If you're angry, say you're angry. If you're disappointed, say your disappointed . If you think what someone else said was foolish, say you disagree. But try never to make sarcastic remarks to children. Also try not to make them to your spouse, as listening to you is one way children learn how to be sarcastic themselves.