“But once in a while, even if nobody mentioned one, the thought of women entered his head all on its own, and once it came it usually tneded to stay for several hours, filling his noggin like a cloud of gnats. Of course, a cloud of gnats was nothing in comparison to a cloud of Gulf coast mosquitoes, so the thought of women was not that bothersome, but it was a thought Pea would rather not have in his head.”

“An invisible gas clouds his thoughts, exhaust from a bus left with its engine running in the middle of his brain.”

“I thought religion would make me live with my head in the clouds, but as often as not, it grounds me in this world.”

“The thought of him was a smoky cloud from hell that moved and crept in her head.”

“Crawling at your feet,' said the Gnat (Alice drew her feet back in some alarm), `you may observe a Bread-and-Butterfly. Its wings are thin slices of Bread-and-butter, its body is a crust, and its head is a lump of sugar.' And what does IT live on?' Weak tea with cream in it.' A new difficulty came into Alice's head. `Supposing it couldn't find any?' she suggested. Then it would die, of course.' But that must happen very often,' Alice remarked thoughtfully. It always happens,' said the Gnat.”

“The thoughts that occur to me while I’m running are like clouds in the sky. Clouds of all different sizes. They come and they go, while the sky remains the same sky always. The clouds are mere guests in the sky that pass away and vanish, leaving behind the sky.”