Interest is a natural premium for preferring goods now rather than later. The pure free market economy provides wealth for all. Political enlightenment tells us to bring government as close to the people as possible. We must structure voting only in small groups where the electors know their representatives. The constitution must also implement the universal ethic of liberty and natural rights.
Linguistic enlightenment sees value in a common universal neutral language.
Esperanto is the most successful of these, so the enlightened person learns this simple tool to communicate with all our fellow human beings. Be open to speaking with all others. Become financially enlightened by having the humility to realize one cannot predict prices tomorrow or the next day. Diversify your wealth and let the broad market carry you to financial security. When you err or forget, list it so you will grow wiser by not repeating it.