conceitful

Mr. Bounderby himself superintends through calculating tabular statements and statistics, and is always secretly rebuking the people of Coketown for indulging in conceitful activities.

Henry Constable, Diana; or, The Excellent Conceitful Sonnets of H.C., the second edition of Diana (first edition 1592)

John Muir wrote almost a century ago that perhaps the universe would be incomplete with Homo sapiens, "but it would also be incomplete without the smallest transmicroscopic creature that dwells beyond our conceitful eyes and knowledge."