idealism

英[aɪ'dɪəlɪz(ə)m;-'diːə-] 美['aɪ'diə'lɪzəm]

1. (philosophy) the philosophical theory that ideas are the only reality

2. impracticality by virtue of thinking of things in their ideal form rather than as they really are

3. elevated ideals or conduct; the quality of believing that ideals should be pursued