" To mix the brew that wakes Death sleep
Fill one spread hand with silver deep.
In hungry pool moons raise their heads:
Pluck one and add the tears it sheds.
Stir slowly with new fighter's quill,
Three times, no more, and let it still.
Add venom from your greatest fear--
One drop--and then the truth is clear. "

― Emily Rodda , Rowan and the Keeper of the Crystal (Rowan of Rin, #3)