Answer:
They are two brothers. However much they run, they do not reach each other.
Prior to smartphones, people used this to record their lives.
They keep secrets locked away. And you pass through them each day. For each one there is a key, They respond to sesame.
It carries paper of the most important sort but also plastic, I'm glad to report. What is it?
White and thin, red within, with a nail at the end. What is it?
How did the farmer find his wife?