Pinto's side have emerged as one of the surprise packages of the tournament after sealing their second-round place by topping Group D ahead of Uruguay, Italy and England.
With a quarter-final place now up for grabs, the 61-year-old coach hopes that his team can write another chapter of their World Cup story in Recife tonight.
"We have to think realistically, but we have to think big," he told FIFA.com. "But first things first. Let's concentrate on Greece first and try to win that."
The last-16 encounter kicks off at 9pm.