My dictionary definition was from the Oxford English Dictionary.
On evolution theory - an interesting take:
“For example, Darwin introduced historicity into science. Evolutionary biology, in contrast with physics and chemistry, is a historical science—the evolutionist attempts to explain events and processes that have already taken place. Laws and experiments are inappropriate techniques for the explication of such events and processes. Instead one constructs a historical narrative, consisting of a tentative reconstruction of the particular scenario that led to the events one is trying to explain.”—Mayr, Ernst (renouned evolutionary biologist)
Ernst Mayr was of course an influential evolutionary biologist who built upon Darwin's ideas. Stephen Gould used his ideas extensively in promoting such ideas as punctuated evolution in his book 'The Structure of Evolutionary Theory'. My particular interest in Mayr stems from his ornithological interests, particularly in his ideas on speciation, genetic drift and the importance of isolated environments(especially islands) in speeding up the process of evolution.
It is also worth noting, perhaps, that he said the following:
I have the honesty to say I'm an Atheist. There is nothing that supports the idea of a personal God.
I find myself, on this, to be greatly in sympathy with EM.