When the sun is strong and the air is warm, however, we shout greetings to one another down the lengths of long driveways and from the windows of our cars as we pass; we hold our heads high as we walk, staring up into the sky with our eyes shut and our faces widened by smiles. We breathe in deeply the summery air, but this sort of inhalation doesn't result in a sigh; it's a precursor to a purr, or the moans one might make during a backrub. We no longer mope, we no longer grouse. We are filled with energy. Although