Great quote from Blessed Pope John Paul II:
There are in the lives of human beings many more truths that are simply believed than truths that are acquired by way of personal verification. Who, for instance, could assess critically the countless scientific findings upon which modern life is based? Who could personally examine the flow of information that comes day after day from all parts of the world and that is generally accepted as true? Who in the end could forge anew that paths of experience and thought that have yielded the treasures of human wisdom and religion? This means that the human being—the one who seeks truth—is also one who lives by belief.