Be careful to leave your sons well instructed rather than rich, for the hopes of the instructed are better than the wealth of the ignorant.

This quote means that it is better to teach your children good values and morals instead of just giving them a lot of money. It is more important to raise well-informed children than to just make sure that they are wealthy. People with knowledge and understanding will be more successful in life than people with wealth who have not been well educated or instructed.