What does the below rebus riddle means?

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

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

Forwards I am heavy, backward I am not. What am I?

When can we add 2 to 11 and get 1 as the correct answer?

Andrew sees a very rare bird named "Ruppell's vulture". Soon Andrew was dead. Can you explain the mystery, Mr. Sherlock?

Find the next number in the series

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

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

What has lots of eyes, but can’t see?

Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?