Personality responsibility.
The money that you will earn one day will come as a result of your hard work, ingenuity, and skill. No one else has the potential to affect your wealth and happiness other than you. You are not a victim. You have the ability to learn anything you want (YouTube), you have the opportunity to do whatever you want in life. No one owes you anything, what is theirs is not yours, don't be jealous of what others have, go and get your own.

Free market capitalism.
By far the best system ever created, capitalism has lifted more people out of poverty in the last 100 years than anything else in history. Children are natural entrepreneurs. They will easily absorb the principles of keeping what they earn and trading voluntarily with others for what they need.
When your kids start earning pocket money have them put aside 10% to give, take 30% for taxes they will pay one day, invest it until then and let them spend the rest. $10 for raking the neighbor's leaves is not $10, as adults, we all know that.

Compound interest.
Children should learn early about investing and the power of compounding returns. Gradually familiarizing your child with how markets work will demystify the process of investing. Start by teaching them the basics of risk vs. reward, real estate, stocks and bonds, and profits and losses.
Simply put, compound interest is the return on the return on the return, etc. The great Warren Buffet credits this single principle as the foundation of his incredible investing success.

Biblical stewardship.
If you are a Christian of course you will be teaching your kids about the principles of biblical economics. All the wealth you build is not really yours, God is just trusting you with His abundance and always being generous, especially to those who are poor and needy and Kingdom building.