Art is long, and Time is fleeting,And our hearts, though stout and brave,Still, like muffled drums, are beatingFuneral marches to the grave.

“Stout and brave” describes hearts that are strong in spirit: courageous and determined. The image of hearts beating “funeral marches to the grave” suggests that even brave people face mortality, so the phrase is not about physical strength or being loving.

AI-written and checked against the verified answer.