See whether I frame this syllogism logically, and whether you can capsize it in any way. If there are altars, there are also gods; but there are altars, ergo there are also gods. What have you to say to that?

After I have laughed to my heart’s content I'll tell you.

Well, it looks as if you would never stop laughing; tell me, though, how you thought what I said was funny.

Because you do not see that your anchor is attached to a slender string—and it’s your sheetanchor at that! Having hitched the existence of gods to the existence of altars, you think you have made yourself a safe mooring. So, as you say you have no better sheet-anchor than this, let's be going.