Answer:
I never was but always will be. No one ever saw me but everyone knows I exist. I give people the motivation to better themselves every day. What am I?
They're up near the sky, on something very tall. Sometimes they die, only then do they fall.
It's equally comfortable in an orchestra and a geometry textbook. What is it?
Everyone has it and no one can lose it, what is it?
It's usually found dried, but often kept slicker. Above another need, it's said to be thicker. What is it?
What sphinxes employ and players enjoy.