Behavior of molecules and another question.

Greetings to the Rabbi Shlita.
In his book ‘God Plays Dice’, the Rabbi said that no one has any idea how a sequence of molecules creates conscious feelings and will, and said that this is different from a sequence of water molecules, where the connection of several molecules creates a liquid (I’m not really familiar with the scientific details). I had a bit of a question: What is the difference between the connection of several molecules suddenly creating a ‘force field’ that causes a liquid? This is arbitrary, and what is the difference between water and a collection of molecules that creates consciousness?
By the way, in the same book, you expanded on your condemnation of materialism, and you said that while evolution can cause a gene to identify with suffering and the like, it can never create something that we see as valuable in that gene. Am I right?
As for the fact that one cannot say anything about something from external assumptions, as David Hume explained, then I didn’t really understand how moral and aesthetic issues are decided.
 
I hope I was able to explain.