Verb
To stand firm; to be fixed and unmoved; to stay; to continue steadfastly; especially, to continue fixed in a course of conduct against opposing motives; to persevere; -- sometimes conveying an unfavorable notion, as of doggedness or obstinacy.
Source: Webster's dictionaryPhilosophers are adults who persist in asking childish questions. Isaiah Berlin
If the fool would persist in his folly he would become wise. William Blake
No man's error becomes his own Law; nor obliges him to persist in it. Thomas Hobbes
To err is human, to persist in it, beastly. Italian Proverb
Persist as resolutely as you persist in eating. Maori Proverb
Persist as resolutely as you persist in eating. New Zealander Proverb