Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: What QCD Tells Us About Nature -- and Why We Should Listen   I discuss why QCD is our most perfect physical theory. Then I visit a few of
its current frontiers. Finally I draw some appropriate conclusions.

23
The categories of this paper are: solv-int
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
5
The categories of this paper are: gr-qc
29
The categories of this paper are: funct-an
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci