Children dealing with terminal illnesses are so wise. My oldest was diagnosed with cancer when he was 3. One of the most profound moments for me was when he looked at me and said  "mommy, I'm tired". And when I told him he could go ahead and take a quick nap, he proceeded to tell me it wasn't that kind of tired. He "wasn't sleepy, just so tired" in this exasperated, worn out sounding voice. Those weren't his last words, he fought for another few weeks, but it still grips me.