Answer:
I can be simple or I can be complex. I can be found in this riddle or in everyday life. I can be shapes or even colors.
I am a cave full of bones and the house of a worm.
What has 4 fingers and a thumb but is not living?
I can fall off a building and live but in water I will die.
I can never be stolen from you. I am owned by everyone. Some have more some have less.
What made Cyclops quit teaching?