Argentina claimed wins over Bosnia and Herzegovina, Iran and Nigeria to ease into the knockout stages as Group F winners, but Messi says his side’s path to glory is only just beginning.
"I'm happy to have qualified for the second round as group winners, but another World [Cup] now begins," he wrote on his Facebook page.
"We really want to achieve something big."
Messi shook off a disappointing Barcelona season to plunder four goals in the group stages – with match-winning goals in all three of Argentina’s games so far.
Should Argentina beat Switzerland, they will face the winner of Belgium and the USA in the last eight, although a potential clash with rivals Brazil can only occur if both sides reach the final.