Evolution of Man -> Donkey -> Dog -> Monkey:-

God created the donkey and told him: you will work tireless from sun up to sun down, carrying heavy bags on your back, you'll eat grass, you will not have intelligence and you will live 50 years. You will be a DONKEY!

The donkey answered: I'll be a donkey, but living 50 years is too much, give me only 20 years. And God gave him 20 years.

God created the dog and told him: You will look after the men house, you will be his best friend, you will eat whatever they give you and you will live 25 years. You will be a DOG!

The dog answered: God, living 25 years is too much, give only 10. God gave him 10 years.

God created the monkey and told him: You will jump from branch to branch, you will do silly things, you will be amusing and you will live 20 years.

The monkey answered: God, living 20 years is too much, give me only 10 years. And God agreed.

Finally, God created man, and told him: You will be Man, the only rational being on this earth, you will use your intelligence to control other animals, you will dominate the world and you willlive for 20 years.

The man answered: God, I'll be man, but living 20 years is not enough, why don't you give me the 30 years that the donkey refused, the 20 years that the dog did not want and the 10 years that the monkey refused. That was what God did, and since then, Man live 20 years like a man, then he enters adulthood and spends 30 years like a donkey, working and carrying the load on his back, then when his children leave home, spends 15 years like a dog, looking after the house and eating whatever is given to him,then he gets into retirement, and spends 10 years like a monkey, jumping from house to house or from children to children, doing silly things to amuse the grandchildren.

One night, a Delta twin-engine puddle jumper was flying somewhere above New Jersey. There were five people on board: the pilot, Michael Jordan,Bill Gates, the Dali Lama, and a hippie. Suddenly, an illegal oxygen generator exploded loudly in the luggage compartment, and the passenger cabin began to fill with smoke.

The cockpit door opened, and the pilot burst into thecompartment. "Gentlemen," he began, "I have good news and bad news. The bad news is that we're about to crash in New Jersey. The good news is that there are four parachutes, and I have one of them!" With that, the pilot threw open the door and jumped from the plane.

Michael Jordan was on his feet in a flash. "Gentlemen," he said, "I am the world's greatest athlete. The world needs great athletes. I think the world's greatest athlete should have a parachute!" With these words, he grabbed one of the remaining parachutes, and hurtled through the door and into the night.

Bill Gates rose and said, "Gentlemen, I am the world's smartest man. The world needs smart men. I think the world's smartest man should have a parachute, too." He grabbed one, and out he jumped.

The Dali Lama and the hippie looked at one another. Finally, the Dali Lama spoke. "My son," he said, "I have lived a satisfying life and have known the bliss of True Enlightenment. You have your life ahead of you; you take a parachute, and I will go down with the plane." The hippie smiled slowly and said, "Hey, don't worry, pop. The world's smartest man just jumped out wearing my backpack.