Making a deal with someone who lacks wisdom or good judgment often leads to unpredictable and unfavorable outcomes. It highlights the importance of being cautious and discerning when entering into agreements, especially with individuals who may not be capable of honoring or understanding the deal's implications. Such decisions can result in consequences that could have been avoided with better judgment.

If you make a deal with a fool, don't be surprised when they act foolishly. This quote emphasizes that one should not expect rational behavior from someone known to lack wisdom. It serves as a reminder to consider the nature and character of the person involved before trusting them with important matters, as foolish actions can undermine plans and cause setbacks.