fan⋅ta⋅sy

- noun
1. imagination, esp. when extravagant and unrestrained.
2. the forming of mental images, esp. wondrous or strange fancies; imaginative conceptualizing.
3. a mental image, esp. when unreal or fantastic; vision.
4. an imagined or conjured up sequence fulfilling a psychological need; daydream.
5. a hallucination.
6. a supposition based on no solid foundation; visionary idea; illusion.
7. caprice; whim.
8. an ingenious or fanciful thought, design, or invention.

psy⋅chol⋅o⋅gy

- noun
1. the science of the mind or of mental states and processes.
2. the science of human and animal behavior.
3. the sum or characteristics of the mental states and processes of a person or class of persons, or of the mental states and processes involved in a field of activity.
4. mental ploys or strategy.

phi⋅los⋅o⋅phy

- noun
1. the rational investigation of the truths and principles of being, knowledge, or conduct.
2. any of the three branches, namely natural philosophy, moral philosophy, and metaphysical philosophy, that are accepted as composing this study.
3. a system of philosophical doctrine.
4. the critical study of the basic principles and concepts of a particular branch of knowledge, esp. with a view to improving or reconstituting them.
5. a system of principles for guidance in practical affairs.
6. a philosophical attitude, as one of composure and calm in the presence of troubles or annoyances.