He was diligent in the matter of temperature control.
They were diligent in the performance of their duties.
He made a diligent inquiry; so, how do I refuse the labor?
There was a diligent effort in which chance has played a big part.
After a diligent search, no pottery whatever was found.
It required a diligent reader with critical understanding, unlike too many popular science books that obfuscate with over-simplification.
He is not a diligent researcher into family history; his questions are more of an interest at the moment.
The ever diligent recording industry said all of the service's arguments had been rejected by Aspen.
There was a diligent inquiry and now most believe they acted on correspondence produced by Henry Woods on his own lawyer's request.
His range of reading was extensive, and he was a most diligent scholar and writer.
From his youth he was diligent in his studies and a great reader, and during his college life showed a marked talent for extemporaneous speaking.
His philosophical opinions grew out of a diligent study of Descartes and Malebranche.
Thus it became possible for almost any diligent reader without much chance of error to refer to its proper place nearly every bird he was likely to meet with.
Coleridge was a diligent student and a warm admirer of Jeremy Taylor, whom he regarded as one of the great masters of English style.
But in this aspect he is rather to be regarded as the diligent expositor of other men's views than as an original thinker.
In Everett's life and career was a combination of the results of diligent training, unflinching industry, delicate literary tastes and unequalled acquaintance with modern international politics.
In his casuistical works he was a diligent compiler, whose avowed design was to take a middle course between the two current extremes of severity and laxity.
In this emphatic declaration, that knowledge of the course of nature is merely probable, Butler is at one with Hume, who was a most diligent student of the bishop's works.
Delicate health, by which he was more or less handicapped throughout his life, prevented his going to college, but he was naturally a diligent student.
He was himself a diligent investigator and experimenter, and he did much to encourage original research among his pupils, one of whom was Dr Joseph Black.
The diligent student, at first attracted by a company of strolling players, threw aside his studies, and plunged carelessly into gay society.
The really diligent student in one of the crowded hives of Cambridge College is as solitary as a dervish in the desert.
The evidence of date derived from changes in the language is more difficult to formulate, and the inquiry calls for the most diligent use of scientific method and critical judgment.
Alhazen was, nevertheless, a diligent and successful student, being the first great discoverer in optics after the time of Ptolemy.
He was not a diligent scholar, but at the grammar school of Hull his skill in elocution attracted the attention of the master.
His popularity as a preacher was deservedly pre-eminent; but no more diligent student ever shut himself up with his books.
The duties of the post were not heavy, and allowed him leisure for a diligent study of Turkish, Arabic and Persian.