Answer:
What is light as a feather but even the strongest man cannot hold it for more than a few minutes?
I am an instrument that you can hear but cannot see or touch. What am I?
I shrink smaller every time I take a bath.
My geometry is lost in the night to be found in daylight's break. The rigors of time have torn me to shreds, yet I stand to protect that which lies within. What am I?
I am what one cannot keep, two cannot hold, and three cannot destroy. What am I?
The answer I give is yes, but what I mean is no. What was the question?