Evolutionary game theory is a ...

Evolutionary game theory is a way of thinking about evolution at the phenotypic level when the fitnesses of particular phenotypes depend on their frequencies in the population.
 John Maynard Smith

Quotes from the same author

So far, we have been able to study only one evolving system and we cannot wait for interstellar flight to provide us with a second. If we want to discover generalizations about evolving systems, we will have to look at artificial ones.
 John Maynard Smith
Mathematics is so much easier than words mathematics makes things clear that words merely muddle and confuse and mess up.
 John Maynard Smith
Scientific theories tell us what is possible; myths tell us what is desirable. Both are needed to guide proper action.
 John Maynard Smith