I'll start with Filosofem.

Sometimes I just can't believe this is it.
This is life. Real life.

You can't rewind time.
You cant fast forward.
Everyone moves at the same rate/speed of 1 day per day

This is it. This is your life and mine. There was nothing before and there's nothing after. This is it.

Waste it, cherish it, who gives a fuck, it's your life.