It is more than possible; it is probable.

My dear Watson," said [Sherlock Holmes], "I cannot agree with those who rank modesty among the virtues. To the logician all things should be seen exactly as they are, and to underestimate one's self is as much a departure from truth as to exaggerate one's own powers.

The ideal reasoner, he remarked, would, when he had once been shown a single fact in all its bearings, deduce from it not only all the chain of events which led up to it but also all the results which would follow from it.

The Adventure of the Noble Bachelor

His ignorance was as remarkable as his knowledge.

There is a mystery about this which stimulates the imagination; where there is no imagination there is no horror.

There is nothing more stimulating than a case where everything goes against you.