The Motive Power
"WHY don't you do something practical?" said the Engine to the Fire. "You have been getting up steam all day, but that rock still stands in front of us."
"The boiler is large," said the Fire.
"Why waste your strength agitating the water?" puffed the Engine to the Fire. "Now, if you would light directly on that rock, your heat might some day crack it."
"There is a principle,"—said the Fire.
"It's not principle that we want: it's action! Splash the water over the rock, so that at least we can clean it." said the Engine to the Fire.
"Our drill has made a little hole in the rock," said the Fire.
"But now the drill has stopped," puffed the Engine to the Fire. "You don't make any progress, and the hole is all filled up."
Just then the engineer took a spark of the Fire, and touched it to a fuse. The rock went up in the air. The Engine went on puffing.
"Why don't you do something practical, like that?" said the Engine to the Fire.