There are people who do what they believe is right, but as they say, 'The road to hell is paved with good intentions.'

The Senate is a place filled with goodwill and good intentions, and if the road to hell is paved with them, then it's a pretty good detour.

Hell is paved with good intentions.

Hell isn't merely paved with good intentions; it's walled and roofed with them. Yes, and furnished too.

Hell is paved with good intentions, not bad ones

Exactly what the powers of hell feed on: the best instincts in man.