You are probably wondering, “why is this so? Surely the soil is the same wherever you go!”
Is this grammatically correct? Or should quotes not be used here?
You are probably wondering, “why is this so? Surely the soil is the same wherever you go!”
Is this grammatically correct? Or should quotes not be used here?
If you quote the actual question that the person is asking themself, as you do here, it's fine to use quotation marks (only why should have a capital letter).
If you don't quote, it would be
You are probably wondering why this is so.