Answer:
I go around in circles, but always straight ahead. Never complain, no matter where I am led. What am I?
I cannot be bought, cannot be sold, even if I'm sometimes made of gold. What am I?
Until I am measured, I am not known. Yet, how you miss me when I have flown. What Am I?
What has 4 fingers and a thumb but isn't alive?
A hundred arms, a thousand fingers, but I have no eyes to see where I linger. What am I?
What made Cyclops quit teaching?