diligent study

See: care, diligence
References in classic literature ?
On one side hung a very large oil-painting so thoroughly besmoked, and every way defaced, that in the unequal cross-lights by which you viewed it, it was only by diligent study and a series of systematic visits to it, and careful inquiry of the neighbors, that you could any way arrive at an understanding of its purpose.
Becker's clinic, Rizal spoke only a smattering of German but in three months of diligent study and practice, he spoke with ease.
After more than thirty years of diligent study of the Word of God, she found her voice and is now a prolific writer.
On the other, it is a diligent study of a particular practice.
The national president of the Integrated Bar of the Philippines, Abdiel Dan Fajardo, said such an important national decision 'should undergo the same scrutiny, diligent study and debate that the country's prior decision of entering into the Rome Statute went through.'
"Following a careful and diligent study of all the necessary requirements, Musanada has implemented the construction plan of the new court building, [which has been] developed based on a classical design within a modern context [...] that will keep pace with the current time and highlight the important features of the distinctive government buildings.
"Following a careful and diligent study of all the necessary requirements, Musanada has implemented the construction plan of the new court building, developed based on a classical design within a modern context in a way that will keep pace with the current time and highlight the important features of the distinctive government buildings," Al Hashmi said.
Air-conditioners must be installed in schools but only after diligent study, since the decision touches on several aspects, House Education committee chairman Kyriacos Hadjiyannis said on Tuesday.
Just as the protagonist of Dostoevsky's "Bobok" finds that at times the dead begin to babble after a couple days in the ground, so it happens that an author sometimes rises from the grave and bursts out "I should like a taste of life!" In this diligent study of printed commentaries on Valerius Maximus's Memorable Deeds and Sayings, Marijke Crab breathes new life into the unread by showing how Renaissance scholars printed, commented on, and interpreted an author whose corpus in our day has yet to receive a proper burial.
In 2013, it was amended to improve provisions on the administration of the Juvenile Justice and Welfare Council (JJWC), handling repeat offenders and children at risk of offending, and providing intervention and rehabilitative services for children in conflict with the law," their position paper read. "It is imprudent to cast aside all the years of diligent study and in-depth discussions to formulate a Restorative Juvenile Justice system in the Philippines without careful research and in consideration of the current facts and laws promoting and protecting the rights of children."
"Better than a thousand days of diligent study is one day with a great teacher." --Japanese proverb
This is where in-depth expertise, diligent study and hard work come in," it said.