Any altruistic system is inherently unstable, because it is open to abuse by selfish individuals, ready to exploit it.

Offense is what people take when they can't take argument.

Evolution is not a genetically controlled distortion of one adult form into another; it is a genetically controlled alteration in a developmental program.

For centuries the most powerful argument for God's existence from the physical world was the so-called argument from design: Living things are so beautiful and elegant and so apparently purposeful, they could only have been made by an intelligent designer. But [Charles] Darwin provided a simpler explanation. His way is a gradual, incremental improvement starting from very simple beginnings and working up step by tiny incremental step to more complexity, more elegance, more adaptive perfection.

I think the world's always a better place if people are filled with understanding.

My computer is a very complex gadget and it was designed by many designers, so why must the universe have only a single designer and not many designers?

...there are no natural borderlines in evolution. The illusion of a borderline is created by the fact that the evolutionary intermediates happen to be extinct.