I'm reading C.S. Lewis quotes. This one grabbed my attention:

"Atheism turns out to be too simple. If the whole universe has no meaning, we should never have found out that it has no meaning..."
— C.S. Lewis

But this is the one I was searching for:

"It would seem that Our Lord finds our desires not too strong, but too weak. We are half-hearted creatures, fooling about with drink and sex and ambition when infinite joy is offered us, like an ignorant child who wants to go on making mud pies in a slum because he cannot imagine what is meant by the offer of a holiday at the sea. We are far too easily pleased."
— C.S. Lewis (Weight of Glory and Other Addresses)

And these also caught my attention:

"If you look for truth, you may find comfort in the end; if you look for comfort you will not get either comfort or truth only soft soap and wishful thinking to begin, and in the end, despair."
— C.S. Lewis

"Even in literature and art, no man who bothers about originality will ever be original: whereas if you simply try to tell the truth (without caring twopence how often it has been told before) you will, nine times out of ten, become original without ever having noticed it."
— C.S. Lewis (Mere Christianity)

I think I'll see if I can find my copy of Voyage of the Dawn Treader now.