The basic structure of proteins is quite simple: they are formed by hooking together in a chain discrete subunits called amino acids.

Thus it seemed to Haeckel that such simple life could easily be produced from inanimate material.

Irreducible complexity is a problem for Darwinian evolution. Whenever we see these complex functional systems we realise that they have to be designed.

There is no publication in the scientific literature - in prestigious journals, specialty journals, or books - that describes how molecular evolution of any real, complex biochemical system either did occur or even might have occurred.

Science is not a game in which arbitrary rules are used to decide what explanations are to be permitted.

I find the idea of common descent (that all organisms share a common ancestor) fairly convincing, and have no particular reason to doubt it.

In Darwin's time all of biology was a black box: not only the cell, or the eye, or digestion, or immunity, but every biological structure and function because, ultimately, no one could explain how biological processes occurred.