don't tell me how rough the sea is

Just sail the ship.

 

That comes from old Viking lore I believe.  And how true it is.  The ship must stay on course, avoiding the obstacles on both the extreme right and the far left.

 

Kevin at New Advent give a current example of what C.S. Lewis meant by "the Devil sends errors into the world in pairs".  The intentional insulting of Islam by the "Danish People's Party" is such as this.  Our strong dislike of one error may tempt us to fall into the trap of the other error.  Our contempt of Islam may tempt us to enjoy someone tweaking their noses so we can watch them make fools of themselves.

 

On the other side, the anti-Christian secularists tend to side with the Muslims whenever they attack Christianity.

 

Common foes can make strange bedfellows indeed.

Don't despair, though.  C.S. Lewis also reminds us of the solution:

Do not let us be fooled. We have to keep our eyes on the goal and go straight through between both errors.

In other words, orthodoxy.  Straight through between both errors, by the grace of Christ and the guidance of His Church.  If we can master that, and learn how to announce the Gospel to each side, we'll be well equipped to handle the current Danish situation, and to serve God in the coming Dramatic Century that it foreshadows.