I don't think you need to read any of his books to understand that religion is of consequence.
The person I was replying to wrote (about Dawkins) "I think he'd come across better if he was more tolerant about things that, in actuality, have little consequence". Dawkins' books explain why he thinks that those things are very far from having little consequence, that they are very harmful. That explains why he isn't tolerant of them.
I'm agnostic btw, I'd love to be atheist.
I'm both. Since I use the original definition of "agnostic", as given by the person who invented the word, they're about different things.
Really short version: (a)gnosticism is about how you decide what you
know to be true and (a)theism is about whether or not you
believe in a god or gods.
More detailed and therefore better version:
Agnosticism is the general principle that a person shouldn't claim something to be objectively true unless they can objectively prove it's true (or, for a less strict definition, provide sufficient objective evidence and reasoning for it to be reasonable to take it as being true).
In his own words:
This principle may be stated in various ways, but they all amount to this: that it is wrong for a man to say he is certain of the
objective truth of a proposition unless he can produce evidence which logically justifies that certainty. That is what agnosticism asserts and, in my opinion, is all that is essential to agnosticism.
Agnosticism applies to pretty much everything. It's a philosophical position, not a religious one. I'm agnostic about it raining at 1500 tomorrow, for example, just as I am agnostic about the existence of gods. Or which team will win the Chilean football league this year. Or a multitude of other things. Agnosticism is essentially a willingless to acknowledge not having certain knowledge of something when you don't have it. It's a literal word - 'agnostic' means 'without knowledge'.
Atheism is a different thing entirely. Firstly, it's specific to religion. Secondly, it's about not having belief, not about not having knowledge.
Using those definitions, there are 4 possible general positions:
Gnostic Theist. Rejects the idea that a person shouldn't claim something is objectively true unless they can objectively prove it. Believes in the existence of a god or gods. Due to that combination, their position is that they
know that their god or gods exist, that this is objective truth.
Gnostic Atheist. Rejects the idea that a person shouldn't claim something is objectively true unless they can objectively prove it. Does not believe in the existence of a god or gods (and almost certainly believes in the non-existence of them - it would be weird for a gnostic atheist to take the atheist position of less certainty). Due to that combination, their position is that they
know that no god or gods exist, that this is objective truth.
Agnostic Theist. Accepts the idea that a person shouldn't claim something is objectively true unless they can objectively prove it. Accepts that the existence or non-existence of a god or gods can't be objectively proven. Believes in the existence of their god or gods as an act of faith rather than claiming it to be objective truth.
Agnostic Atheist. Accepts the idea that a person shouldn't claim something is objectively true unless they can objectively prove it. Accepts that the existence or non-existence of a god or gods can't be objectively proven. Does not believe in the existence of a god or gods (and might or might not believe in the non-existence of them).