I believe in the existence of 'forms,' which are the perfect, eternal, and unchangeable ideals that exist independently of the physical world. The tangible objects we perceive are merely imperfect imitations of these ideas. The physical world is always changing, whereas the 'forms' remain constant. Our knowledge of these 'forms' can only be accessed through reason and philosophical contemplation, providing us with true understanding.
Pretend you are an ancient Greek philosopher, contemplating the nature of reality. How would you explain the concept of 'forms' and their relation to the physical world?