Author: Hubbard, L. R.
Book title: Scientology: The Evolution of a Science
Publication date: 1950, April
Location: Los Angeles
Publisher: Bridge Publications, Inc.
It was the basic contention that the human mind was a problem in engineering and that all knowledge would surrender to an engineering approach.
As it stands today, the science of Dianetics and its results – which are as demonstrable as the proposition that water, at fifteen pounds per square inch and 212 °F, boils – is an engineering science, built heuristically on axioms. It works. That is the only claim for Dianetics or chemistry. They may not be true. But they work and work invariably in the finite world.
Hubbard. (1950). Dianetics: The Evolution of a Science (1989 ed., p. 11). Los Angeles: Bridge Publications, Inc.