Quixotic ideal is a phrase that refers to an unrealistic, idealistic, or impractical goal. It's a term derived from the protagonist Don Quixote in the novel by Miguel de Cervantes. To describe this concept, you can use various synonyms such as romantic aspiration, lofty objective, utopian vision, fanciful dream, chimerical wish, idealistic fantasy, impractical notion, or unrealistic hope. All these phrases connote an ideal or target that is exceedingly difficult or impossible to fulfill. With this in mind, it's essential to stay grounded in reality while still striving for lofty goals, understanding that it takes hard work and many failures along the way to achieve any aspirational target.