People
One of the most adventurous things left us is to go to bed. For no one can lay a hand on our dreams.
— Edward Verrall Lucas

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
Going to bed is called an adventure because dreams remain private and untouchable. Whatever else can be taken or controlled, no one can reach into what you dream. The quote makes ordinary sleep sound like a small, secret expedition.
Context reviewed