The words "fool notions" indicate ideas or notions that are foolish or misguided. The antonyms for this phrase would be concepts that are intelligent, wise, and grounded in reality. These could include ideas that are based on facts and evidence, rational thinking, and informed opinions. Synonyms for wise ideas could include concepts such as astute, shrewd, discerning, rational, and logical. By striving to cultivate wise concepts instead of foolish ones, individuals can make better decisions and lead more fulfilling lives. Letting go of fool notions can lead to positive change and growth in various aspects of life, from career success to personal relationships.