Has it ever occurred to you how lucky you are to be alive? More than 99 percent of all the creatures that have ever lived have died without progeny, but not a single one of your ancestors falls into that group! ... Not a single one of your ancestors, all the way back to the bacteria, succumbed to predation before reproducing, or lost out in the competition for a mate.

The evidence for evolution pours in, not only from geology, paleontology, biogeography, and anatomy, but of course from molecular biology and every other branch of the life sciences.

Reasons for declaring belief is not are not the same as reasons for believing in god.

Go ahead and believe in God , if you like, but don't imagine that you have been given any grounds for such a belief by science.

Cost is always an object - the second law of thermodynamics sees to that

I am a philosopher, not a scientist, and we philosophers are better at questions than answers.

Some philosophers can't bear to say simple things, like "Suppose a dog bites a man." They feel obliged instead to say, "Suppose a dog d bites a man m at time t," thereby demonstrating their unshakable commitment to logical rigor, even though they don't go on to manipulate any formulae involving d, m, and t.