When Thomas Aquinas said, “To one who has faith, no explanation is necessary,” he was emphasizing the role of faith in religious belief. Aquinas, a 13th-century Catholic theologian and philosopher, believed that faith was a gift from God and a key aspect of religious life.
The quote suggests that when someone has faith, they do not need logical or empirical evidence to believe in God or accept religious teachings. Instead, their faith serves as a sufficient basis for their beliefs. This means that for a person with faith, the existence of God and the truth of religious teachings are self-evident, and they do not require further explanation or proof.
It is important to note that Aquinas also recognized the role of reason in understanding and explaining religious matters. He believed that faith and reason could complement each other, as both were given by God. However, in this quote, he highlights the significance of faith in the life of a believer.