No existing form of anthropoid ape is even remotely related to the stock which has given rise to man.

A century ago, people laughed at the notion that we were descended from monkeys. Today, the individuals most offended by that claim are the monkeys.

Never call anyone a baboon unless you are sure of your facts.

Why are there no nonhuman primates with an existing complex gestural language? One possible answer, it seems to me, is that humans have systematically exterminated those other primates who displayed signs of intelligence.

As I sit, my back leaning against a damp, moss-covered tree trunk, my eyes sweeping the canopy above, my ears straining to catch the crack of a distant branch that betrays an orangutan moving in the treetops, I think about how we humans search for God. The tropical rain forest is the most complex thing an ordinary human can experience on this planet. A walk in the rain forest is a walk into the mind of God.

Much of human behavior can be explained by watching the wild beasts around us. They are constantly teaching us things about ourselves and the way of the universe, but most people are too blind to watch and listen.

If we look straight and deep into a chimpanzee's eyes, an intelligent self-assured personality looks back at us. If they are animals, what must we be?

Our probable ancestors, Homo erectus and Homo habilis -now extinct- are classified as of the same genus (Homo) but of different species, although no one (at least lately) has attempted the appropriate experiments to see if crosses of them with us would produce fertile offspring.

Getting even was the basis of many primate semantic confusions, such as'expropriating the expropriators,' 'an absolute crime demands an absolute penalty,' 'they did it to me so I can do it to them,' and, in general, the emotional mathematics of 'one plus one equals zero' (1 + 1 = 0).The primates were so dumb they didn't realize that one plus one equals two (1 + 1 = 2) and one murder plus one murder equals two murders, one crime plus one crime equals two crimes, etc.

When gorillas smell danger, they run around and call out to the rest of the primates in the jungle to warn them something evil is coming. And when one of their own dies, they mourn for days while beating themselves up in sadness for failing to save that gorilla, even if the cause of death was natural. And when one colony is mourning, their chilling echoes migrate to other colonies — and those neighbors, even if they are territorial rivals, will also grieve with them. When faced with a common danger, rivals turn into allies. And when faced with death, the loss of just one gorilla becomes the loss of the entire jungle.