Trenton Lee Stewart said this quote

Nicholas Benedict did have an exceptional gift for knowing things (more exceptional, in fact, than most adults would have thought possible), and yet not even he could know that this next chapter was to be the most unusual-and most important-of his entire childhood. Indeed, the strange days that lay ahead would change him forever, though for now they had less substance than the mist through which he ran.

~ Trenton Lee Stewart

You've read half the books in this house? This whole house? Well, approximately half. Sticky said. To be more accurate, I suppose I've read more like - his eyes went up as he calculated - three sevenths? Yes, three sevenths. Only three sevenths? said Kate, pretending to look disappointed. And here I was prepared to be impressed.

~ Trenton Lee Stewart

Now listen, we need to be quiet as mice. No, quieter than that. As quiet as . . . as . . .” “Dead mice?” Reynie suggested. “Perfect,” said Kate with an approving nod. “As quiet as dead mice.

~ Trenton Lee Stewart

So what's your team called? asked Kate, twisting her legs into a pretzel-like configuration, We're called the Winmates because we're inmates who win. Kate looked back and forth at Reynie and Constance, searching their expression for signs of delight. You gave yourselves a name? asked Constance. Now it was Kate's turn to be baffled. You didn't? How can you have a team without a name?

~ Trenton Lee Stewart