the belief that a perfect life, situation, etc. can be achieved, even when this is not very likely 理想主义 He was full of youthful idealism. 他满脑子都是年轻人的理想主义。 Idealism has no place in modern politics. 在当代政治生活中，理想主义根本行不通。
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philosophy 哲学 the belief that our ideas are the only things that are real and that we can know about 唯心主义；唯心论；观念论；理念论
Word Originlate 18th cent. (as a philosophical term): from French idéalisme or German Idealismus, from late Latin idealis, via Latin from Greek idea ‘form, pattern’, from the base of idein ‘to see’.