Answer:
I am black within and red without With four corners round about.
Deposit red liquid in me.
I am a small paradise surrounded by dryness and heat. What am I?
What type of shoes do spies wear?
I can be repeated but rarely in the same way. I can't be changed but can be rewritten. I can be passed down, but should not be forgotten. What am I?
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.