My next essay is on the whole hell debate - eternal conscious torment v anihilationism and so on. Here are some quotes on hell that I've come across...
If any human beings find themselves in hell, they will have no-one but themselves to blame. If any find themselves in heaven, they will have no-one but the Lord to praise.
Our friends who long to get rid of the eternal punishment should cease to argue against God and instead obey God's commands while there is still time.
Augustine of Hippo
The principal danger of the 20th century will be: a religion without the Holy Spirit, Christians without Christ, forgiveness without repentance, salvation without regeneration, politics without God and a heaven without a hell.
The road to hell is paved with good intentions.
Richard Baxter (I was surprised by who originally said it...)
It is safer for the evangelist to have hell more frequently in his heart than on his lips.
To remember hell prevents our falling into hell.
John Chrysostom, Homilies on Romans