His tutors always praised him for his assiduity and the trouble he took.
Moreover, it is the one mankind, if it could, would cultivate with the most assiduity.
But I am more obliged to you for your kindness and assiduity, than I am to him only for thinking of it.
Mademoiselle Heinzleman's great test of all goodness was assiduity.
Margarita had contrived to gain my interest ...