Answer:
Always old, sometimes new. Never sad, sometimes blue. Never empty, sometimes full. Never pushes, always pulls.
I have a face, yet no senses. But I don't really care, because time is of the essence.
It is greater than God and more evil than the devil. The poor have it, the rich need it, and if you eat it you'll die.
What is the freedom of birds and the pen of old men?
Though blind as well, can lead the blind well.
What is so fragile that saying its name breaks it?
Difficult
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?