1The researcher's persistence in the face of repeated setbacks ultimately led to a groundbreaking discovery.
2Does the persistence of social inequality in modern societies undermine the legitimacy of democratic institutions?
3Through persistence and hard work, the entrepreneur was able to overcome the initial failure of her business and achieve long-term success.
4The persistence of the problem over time suggests that a more fundamental solution is required, rather than merely treating its symptoms.
5There is a delicate balance between persistence and knowing when to abandon a failing project; the key is to distinguish between perseverance and obstinacy.