Are moral issues complex?

Human Personhood Begins at Conception 

Non-Christians and even Christians can take opposite positions on abortion even when they think rationally, honestly, and with good will. The continuing controversy over abortion shows that it is a truly controversial issue. It is not simple and clear cut, but complex. Just as the choices for action are often difficult for a woman contemplating abortion, the choices for thought are often difficult for open-minded philosophers.

Then Kreeft goes on to say: 

Everything I have said so far is a lie.

 

And then this: 

Moral issues are always terribly complex, said Chesterton – for someone without principles