“It's a dangerous business, going out your door.”

“It's a dangerous business, Frodo, going out your door. You step onto the road, and if you don't keep your feet, there's no knowing where you might be swept off to.”

“He [Bilbo] used often to say there was only one Road; that it was like a great river: its springs were at every doorstep, and every path was its tributary. 'It’s a dangerous business, Frodo, going out of your door,' he used to say. 'You step into the Road, and if you don’t keep your feet, there is no knowing where you might be swept off to.' . . .”

“You can't prepare for everything life's going to throw at you. And you can't avoid danger. It's there. The world is a dangerous place, and if you sit around wringing your hands about it, you'll out on all the adventure.”

“Thanking people is dangerous business. A name always slips your mind.”

“It is the business of the future to be dangerous; and it is among the merits of science that it equips the future for its duties.”