I discuss challenge of lattice QCD, from quarks to nuclei, which connects QCD
with nuclear physics.Comment: 7 pages, 10 figures, A talk given in the panel discussion
"Fundamental challenge of QCD", at 47. Internationale Universit\"atswochen
f\"ur Theoretical Physik Schladming, Stria, Austria, 28 February - 7 March,
200