By what process could you make a 'Tea-Table' into food?

Can you decipher these quotes by Albert Einstein?
Blf xzm mvevi hloev z kilyovn lm gsv ovevo lm dsrxs rg dzh xivzgvw.

You are given four tennis balls and asked to arrange those balls in a manner that the distance between each one of them is exactly equal. How will you do it?

I am dry when I go inside, but wet when I am pulled outside.
The longer I am inside, the stronger I get
When I am completely out, I am wet and I literally sag
Who am I?

The answer I give is yes, but what I mean is no. What was the question?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

Can you place six matchsticks in a manner that each of the matchsticks is in touch with the other five matchsticks?

What word is identified by the below rebus?

Your Your Your Your Your
Your Your Your Your Your

A pregnant woman is preparing to name her seventh child. Her children's names so far are Dominique, Regis, Michelle, Fawn, Sophie, and Lara. What will she name her next child -- Jessica, Katie, Abby or Tilly?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??