The Dangerous Dimension, published in 1938 in Astounding Science-Fiction

“The Dangerous Dimension”
by L. Ron Hubbard

Publication date: July 1938

Original publication: Astounding Science-Fiction

Genre: Science Fiction

Story description: Meek Dr. Henry Mudge has a dramatic personality change after discovering a mathematical equation that transports him to any place in the universe just by thinking about it. The only problem is his thoughts don’t always take him where he wants to go.…

Currently available as part of the Stories from the Golden Age series, in the title The Professor Was a Thief.