Once upon a time there was a monkey who was tied on a short rope to a peg fixed into the floor near a wall of a small room.
A few feet above this peg there was a small hole in the wall (what we would call a niche, just a little place like a shelf).
The monkey was very neglected, and uncomfortable because nobody looked after him. He had to remain in the same place for days and days, without anyone coming in and feeding him at all.
As you know monkeys jump around in trees, so have what we call liberty. He would have had plenty of chance in his normal state to move around freely, but this poor monkey was tied to the floor.
Because the poor wretch was tied like this, he couldn't move away much or go to the toilet as he would normally do. So he had all this filth on the floor around him which made him miserable.
One day he was looking up and saw the hole in the wall.
He thought 'Well, its no good sitting here in this filth, I'm going to try to get up there.
So he jumped up but the rope was just too short for him to get into the hole, and he was pulled back down by the peg in the floor.
He kept trying, and he jumped and jumped for days and days. He kept on doing it and one day, because of all the jumping that he had done, he was able to free the little post which has been driven into the floor. He got up into the niche in the wall, and was able to sit up there. In the hole of course he was free from falling back on the floor, and although he didn't have complete freedom he was able to get out of the filth and dirt.