Full Idea
In the 'Aufbau', Carnap tried to show how all of our concepts can be derived from a few basic concepts. ..Consequently there can be one science which studied all that existed, the science of the objects corresponding to the basic concepts.
Gist of Idea
All concepts can be derived from a few basics, making possible one science of everything
Source
report of Rudolph Carnap (The Logical Structure of the World (Aufbau) [1928]) by Baruch Brody - Identity and Essence 2.2
Book Reference
Brody,Baruch: 'Identity and Essence' [Princeton 1980], p.36
A Reaction
This is Carnap's Constructionist programme.