Borrowing the variable examples from another comment, do you believe that the former is easier to understand for someone who knows English grammar than the latter? (I'm using Python syntax since we're going for English-like readability and added parantheses to the boolean operation to indicate order of operations for the liberal arts major that we've decided is the target audience of this code):

  if isAdmin:
    return false
  if not isActive:
    return false
  return true

vs

  return (not isAdmin) and isActive