Now that cleverness was the fashion most people were clever – even perfect fools; and cleverness after all was often only a bore: all head and no body.

It is a great act of cleverness to be able to conceal one's being clever.

It is great cleverness to known when to conceal one's cleverness

There was still an hour or two of daylight - even though clouds admitted only a greyish light upon the world, and his Uncle Timothy's house was by nature friendly to gloom.

("Out Of The Deep")

An hour's terror is better than a lifetime of timidity.

Do diddle di do, / Poor Jim Jay / Got stuck fast / In Yesterday.