The genetic code is not a binary code as in computers, nor an eight-level code as in some telephone systems, but a quaternary code with four symbols. The machine code of the genes is uncannily computerlike.

We have the power to defy the selfish genes of our birth and, if necessary, the selfish memes of our indoctrination. We can even discuss ways of deliberately cultivating and nurturing pure, disinterested altruism - something that has no place in nature, something that has never existed before in the whole history of the world. We are built as gene machines and cultured as meme machines, but we have the power to turn against our creators. We, alone on earth, can rebel against the tyranny of the selfish replicators.

There is something wrong with using faith - belief without evidence - as a political weapon. I wouldn't say there is something similar about using science. Science - or the products of science like technology - is just a way of achieving something real, something that happens, something that works.

Who are we to say that that was an odd way to do it? I don't think that it is God's purpose to make his intention absolutely obvious to us.

In childhood our credulity serves us well. It helps us to pack, with extraordinary rapidity, our skulls full of the wisdom of our parents and our ancestors. But if we don't grow out of it in the fullness of time, our ... nature makes us a sitting target for astrologers, mediums, gurus, evangelists, and quacks. We need to replace the automatic credulity of childhood with the constructive skepticism of adult science.

Science has eradicated smallpox, can immunise against most previously deadly viruses, can kill most previously deadly bacteria. Theology has done nothing but talk of pestilence as the wages of sin.

If you listen to two people who are arguing about something, and they each of them have passionate faith that they're right, but they believe different things---they belong to different religions, different faiths, there is nothing they can do to settle their disagreement short of shooting each other, which is what they very often actually do.