Its no use going to the goat’s house to look for wool.

By asking for the impossible we obtain the possible.

A kitchen knife cannot carve its own handle.

You can’t get blood out of a stone.

You can’t make a silk purse from a sow’s ear.

You can’t make an omelette without breaking eggs.

You can’t make bricks without straw.

It is impossible to overdo luxury.

No one is expected to achieve the impossible.