n.[U]

1. 理想主义
2. 【哲】唯心论；观念论，理念论
3. 唯心主义

n.

1. the practice of forming or pursuing ideals, especially unrealistically.
2. (in art or literature) the representation of things in ideal form.
3. Philosophy  any of various systems of thought in which the objects of knowledge are held to be in some way dependent on the activity of mind.