'Tis known by the name of perseverance in a good cause, and of obstinacy in a bad one.

Obstinacy in a bad cause is but constancy in a good.

'Tis known by the name of perseverance in a good cause, and of obstinacy in a bad one

'Tis known by the name of perseverance in a good cause -- and of obstinacy in a bad one.

I have been growing this moustache, a budding Burt Reynolds number, for a good cause known as Movember.

The good terrorist works for my cause. The bad one works for his own.