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

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

Through your logical capabilities, can you make 7 an even?

What does a man do only once in his lifetime, but women do once a year after they are 29?

We have arranged an array of numbers below. What you have to do is use any kind of mathematical symbol you know excluding any symbol that contains a number like cube root. You can use any amount of symbols but you have to come up with a valid equation for all of them.

0 0 0 = 6
1 1 1 = 6
2 + 2 + 2 = 6
3 3 3 = 6
4 4 4 = 6
5 5 5 = 6
6 6 6 = 6
7 7 7 = 6
8 8 8 = 6
9 9 9 = 6

My location can be determined by the below rebus.
So where am i ?

2, 3, 5, 9, 17, _ What is the next number in the sequence?

I had an infinite supply of water and 5 litres and 3 litres jars.

How would you measure exactly 4 litres in the least number of steps?