You see this tenacity in the face of Jamal (Jamal Udin Torabi), the younger of the two refugees, who also has a spark of impish swagger in his eyes.
The composition of La Tentation de Saint Antoine provides another example of that tenacity in the pursuit of perfection that made Flaubert go back constantly to work on subjects without ever being satisfied with the results.
Al Gore is showing the same tenacity in securing this election that I pray he will show when he goes to bat as president for patients' rights, human rights, the planet earth and affordable basics for working people.
Not all Brazil's neighbours have shown the same tenacity in trying to rein in galloping price rises.
But the team's tenacity in the face of severe limitations — inadequate financing and a young team with a lack of professional training — paid off when the players held aloft the revered Gyalyum Chenmo Memorial Gold Cup trophy.
His desire and courage to change fields even when he had succeeded in one, combined with the tenacity to keep going in the face of failure in the new field, have got him off to a promising start.
The tenacity has come in handy.
He triggered a spat that threatens the integrity of the inquiry and exposes the tenacity of prejudice in sections of British society.
The attack followed a devastating series of bombings on Monday that wrecked landmark hotels catering to foreigners, killing dozens and demonstrating the tenacity of insurgents in striking when and where they have wanted for the past six months.
Sir George Young, leader of the Commons, said News Corp's decision to abandon its bid was "entirely right" and praised the tenacity of backbenchers in pursuing News International over wrongdoing.
