The air was clear and scented, the breeze flitted lightly through the tall grass around his cave, the birds were chirruping at each other, the butterflies were flitting about prettily, and the whole of nature seemed to be conspiring to be as pleasant as it possibly could.
It wasn’t all the pastoral delights that were making Arthur feel so cheery, though. He had just had a wonderful idea about how to cope with the terrible lonely isolation, the nightmares, the failure of all his attempts at horticulture, and the sheer futurelessness and futility of his life here on prehistoric Earth, which was that he would go mad.