“As Violet and Klaus Baudelaire stood, still in their nightgown and pajamas, backstage at Count Olaf’s theater, they were of two minds, a phrase which here means “they felt two different ways at the same time.” On one hand, they were of course filled with dread.
…
On the other hand, however, they were fascinated, as they had never been backstage at a theatrical production and there was so much to see.”
―
Lemony Snicket,
The Bad Beginning