Simon Conway Morris

The tree of life was always there. Evolution just fills in the gaps.

It is difficult to imagine evolution in alien planets operating in any manner other than Darwinian.

Evolution is true, it happens, it is the way the world is, and we too are one of its products. This does not mean that evolution does not have metaphysical implications; I remain convinced that this is the case.

The Burgess Shale is not unique, but for those who study evolution and fossils it has become something of an icon. It provides a reference point and a benchmark, a point of common discussion and an issue of universal scientific interest.