In a crazy world there is often a kind of whiplash truth in nonsense; from laughter we get a sense of proportion. Nonsense is often truth standing on its head: but it is surprising how little has been written that has true literary merit. That is where limericks of the order of Edward Lear, in this rich treasury of nonsense writing can be read with one eye on their sense and the other on their entertainment. In either case you will be repaid with large dividends for small outlay.