I heard recently from a Rabbi's speech (a.k.a., I don't know the actual source) that when the Alter Rebbe was in prison in Russia one of the Russians there asked him to prove the existence of G-d.

So the Alter first asked him to think of something that doesn't exist, the Russian said: a flying cow. The Alter Rebbe then said that that's incorrect, because a cow exists, and wings exist, he's just putting two things that already exist together, but it's impossible to actually think of / know about anything that doesn't exist, so the Alter Rebbe concluded that since we know about G-d, he must exist, because we know about him, and it's impossible to know about something that doesn't exist!

When I first heard this it sounded pretty good, but then I thought: why can't you just respond that he know of human creators of art (for example) and the "know" about G-d is just to consider everything as like a big art piece, and then to imagine some bigger creator, so it would just be like imagining something that does already exist, a human creator, and putting it in another perspective.

So I'm not trying to challenge the existence of G-d, chas v'shalom, nor am I challenging the wisdom of the Alter Rebbe, but I was trying to understand this particular proof from the Alter Rebbe (and the Rabbi I heard it from said it was found later in the Rishonim). So if anyone either #a can explain why it can't be refuted from the above or #b just find the source of this story somewhere ('cause it might clarify things to see it inside), then that would be the #1 answer.

EDIT just to clarify, the context in which this story was said was to explain the following: There's some parts of G-d we can actually know about, like how He creates the world(s) etc., like it's actually possible to know about / imagine the energy that gives life to every being, that's something we can comprehend, know about, imagine, etc. so relative to that level of G-d, it's considered an "existence", hence the Alter Rebbe's proof that G-d "exists", since it's referring to that aspect of G-d, which another aspect of G-d (which isn't at all related to the Alter Rebbe's proof) is that aspect of G-d that's totally removed from the world(s), it doesn't create them at all, it has nothing to do with actively giving life to the world, and regarding that level of G-d, it's actually not at the level of "existence", because we can't know about it, and (the Rabbi I heard the speech from goes on to say) these two levels correspond to "Memale" and "Sovev" as discussed in Kabbalah etc.

but anyway, the Alter Rebbe was just trying to answer the question of a Russian "How do we know there's a G-d at all!" and to that question the Alter Rebbe just gave the proof simply about since we know about it, it must exist (and he was only / simply referring to the first level "Memale", since he didn't want to get into deep Kabbalah with this Russian, just to simply explain that there is a G-d at all).

My question was only just why can't you say, according to this simple answer, that by "knowing about Him" the person is just putting other things that exist together to form a "Super Creator".

As I was just writing this, I realized I actually answered my own question that the proof G-d exists is because we know about the G-dly energy behind the worlds, as said above ,or even if someone hasn't reached that stage, he at least knows about the basic energy that gives life to everything, it's simple that everything (or at least) somethings have energy at least giving them life, and because we know about that, that's proof that it exists. So basically, I (with Double AA's help) actually answered my own question.

  • 1
    What was the Alter Rebbe asserting we know about God? That seems to be the biggest problem with the argument.
    – Double AA
    Commented Mar 20, 2018 at 20:53
  • 2
    Why don't you ask the Rabbi from whom you heard the story? He should be able to explain what he is saying. Commented Mar 20, 2018 at 21:56
  • 1
    So you want us to explain a story to which you don't have a link where we can read it up? What if you are missing some vital details that change the story allot?
    – aBochur
    Commented Mar 20, 2018 at 23:27
  • 1
    This proof seems very similar to the philosophical notion of the Medabrim which Rambam rejects in Shemoneh Perakim Chapter 1: "The element of imagination: this power [relates to the faculty of memory and makes it possible to] recall the impression of various incidents after they are no longer perceptible by the senses. [This faculty can also] combine and separate different [recollections]. Thus, this power has the potential to develop [a notion] that was never thought of previously and that cannot be understood, based on one’s previous perception. <cont.>
    – Alex
    Commented Mar 21, 2018 at 0:37
  • 1
    <cont.> In this matter, the sect of medabrim erred grossly and established a false foundation with regard to the distinctions concerning what must exist, what may exist and what cannot exist. For they thought - or imagined - that anything that could be imagined [by a person] could actually exist. They did not realize that this power has the potential of making a combination of various matters that cannot possibly exist, as explained above." (Touger translation)
    – Alex
    Commented Mar 21, 2018 at 0:38

1 Answer 1


Ok I realized the answer to the question, after Double AA helped me by asking "What do we know about G-d?", 'cause that is actually the answer.

Basically, this story was told by the Rabbi in context of explaining that there are some parts of G-d that we can know about, like how He gives life to every living being, and (this one takes a little deeper meditation to realize, but still possible to realize that) He creates everything from something to nothing etc.

Basically, this level of G-d that we can know (says the same Rabbi I heard this whole thing from) is on the level of "existence", it exists in at least somewhat tangible terms, and only something that exists we can know about, and only something that we know about exists (as mentioned in the actually story), but there's another aspect of G-d that we don't know about, and that's the part of Him which is removed / separate so to speak from the world(s), that level of Him doesn't actively create the worlds, it's a thing for itself, and regarding that level, we don't know about it, as Double AA said, but the Alter Rebbe's entire proof was just regarding the aspect of G-d that we do know about , namely, the aspect of Him which creates the worlds, since the Alter Rebbe wasn't trying to get into any deep Kabbalah with the Russian, he was just trying to explain simple how we know there is some kind of a "G-d".

So it turns out that Alter Rebbe's proof is only for the part of G-d that we can know about, and the proof is (I guess, someone correct me if they think differently) that since everyone knows about the G-dly life force that's within everything (or at least the concept of life force just for basic, living creatures, since it's obvious that at least some things have life force), so then it must exist, since we know about it, because it's so obvious (I think I'm getting this right, someone let me know if there's any kind of flaw in this understanding of it)

  • The issue is this all doesn't accomplish anything interesting. Anyone who already believes in God will accept the premise that they know something about God, and anyone who doesn't already believe in God won't accept the premise that they know something about God. So only people who already believe in God will derive something from this, which isn't a gain for them since they already believed the conclusion.
    – Double AA
    Commented Mar 20, 2018 at 21:33
  • @DoubleAA I think the basic meaning of the proof is not necessarily that we know something about G-d, not how he works etc. but the point was that everyone knows "about" G-d, since if the Russian didn't know about him at all, he wouldn't have asks "prove it!" There very fact he could even conceptualize it proves it, because you can't conceptualize anything that doesn't exist Commented Mar 20, 2018 at 21:37
  • @DoubleAA and now that just leads back to my question, which was that if the Russian could image a flying cow by putting two things that already exist together, so why couldn't he just have imagined G-d by putting things (like a human artist etc) that already exist together? Again, I'm not challenging it, I just want to understand it Commented Mar 20, 2018 at 21:40
  • So what you've concluded is that the concept of a God exists, just like the concept of a flying cow exists. Why is that a useful conclusion? The Russian would have already agreed that the concept of a God exists, as does the concept of a flying cow. But we know winged cows don't exist, even though the concept of them exists!
    – Double AA
    Commented Mar 20, 2018 at 21:41
  • 1
    more likely the flaw is in the proof...
    – Double AA
    Commented Mar 20, 2018 at 21:43

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .