What he said can be seen here: Heaven's not for Christians only.
Let's look at some of his statements quickly:
- Most of us think God is a Christian, but if you think that God is going to tell the Dalai Lama 'you're a good person, but sorry you're not a Christian' then (I say) rubbish.
I agree that God is not a Christian, a Christian is a follower of Jesus Christ, the Spirit of God, and God the Father.
- "We've conveniently forgotten that Christians burnt witches at the stake. It wasn't pagans responsible for the Nazi genocide - it was Christians," Tutu said.
Besides, in my opinion - It is a stronger argument to say that Nietzsche and evolutionism influenced Hitler more than Christianity.
- He said it had also been claimed that apartheid was supported by the scriptures and the symbol of the Ku Klux Klan was a cross.
To sum up, I think D.T. has used some popular pithy sayings to gain acceptance from his audience. I don't think he's looked into the topic, and it's clear he no longer stands on orthodox Christian teachings. In fact, he seems to have turned about-face, attacking the church with his views which lean towards universalism.
I'll end with a quote from G.K. Chesterton (from Orthodoxy):
Thoroughly worldly people never understand even the world; they rely altogether on a few cynical maxims which are not true.