Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

I’m tall when I’m young, and I’m short when I’m old. What am I?

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?

A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family?

I have no life, but I can die. What am I?

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

Can you count the number of squares in the figure below?

What does this Rebus Picture mean?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

A beggar on the street can make one cigarette out of every 6 cigarette butts he finds. After one whole day of searching and checking public ashtrays the beggar finds a total of 72 cigarette butts. How many cigarettes can he make and smoke from the butts he found?