"Every adult should be able to make as many effective decisions without fear or favor about as many aspects of her or his life as is compatible with the like freedom of every other adult. That belief is the original and only defensible meaning of liberalism."

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The replicators that exist tend to be the ones that are good at manipulating the world to their own advantage. But other replicators are also successful otherwise they would not be common. The world therefore tends to become populated by mutually compatible sets of successful replicators, replicators that get on well together

— Richard Dawkins