Josh always said that their parents lived five million years in the past and were only happy when they were up to their ankles in mud. The twins knew that they were loved unconditionally, but they also knew that their parents simply didn't understand them […] or much else about modern life. (8.24)
The twins looked at one another, suddenly uncertain. This was just a little too weird, and there was something in Scathach's lack of expression that was frightening. Sophie's eyes suddenly widened in shock. "I just realized that both of those people, Joan of Arc and Tutankhamen, died young."
"Very young," Josh said, sobering, recalling his history. "They both died when they were nineteen."
"Yes, they did, didn't they?" Scathach agreed, turning away to look at Nicholas Flamel and the Goddess of the Three Faces. (14.72-74)
"Is he always like this?" Scatty asked.
"Like what?" Sophie asked.
"Foolish, ill-advised, reckless...? Shall I go on?"
"No need. And yes, he's usually like this. Sometimes worse." When they were growing up, she used to tease Josh that he got all the "doing" genes, whereas she got all the "thinking" genes. (22.5-8)