"I turned to Dionysus. "You cured him?" "Madness is my specialty. It was quite simple." "But...you did something nice. Why?" He raised and eyebrow. "… - Rick Riordan

Go on with what your heart tells you, or you will lose all.

"Grover was sniffing the wind, looking nervous. He fished out his acorns and threw them into the sand, then played his pipes. They rearranged themselves in a pattern that made no sense to me, but Grover looked concerned.
"That's us," he said. "Those five nuts right there."
"Which one is me?" I asked.
"The little deformed one," Zoe suggested.
"Oh, shut up.

"Hoover Dam," Thalia said. "It's huge."
We stood at the river's edge, looking up at a curve of concrete that loomed between the cliffs. People were walking along the top of the dam. They were so tiny they looked like fleas.
The naiads had left with a lot of grumbling — not in words I could understand, but it was obvious they hated this dam blocking up their nice river. Our canoes floated back downstream, swirling in the wake from the dam's discharge vents.
"Seven hundred feet tall," I said. "Built in the 1930s."
"Five million cubic acres of water," Thalia said.
Graver sighed. "Largest construction project in the United States."
Zoe stared at us. "How do you know all that?"
"Annabeth," I said. "She liked architecture."
"She was nuts about monuments," Thalia said.
"Spouted facts all the time." Grover sniffled. "So annoying."
"I wish she were here," I said.