This quote conveys the idea that a smile can be a sign of strength even when one isn't necessarily feeling happy. It suggests that smiling can be an expression of resilience and inner fortitude.
It acknowledges the complexity of emotions. The quote implies that people can face challenges and difficulties while still choosing to present a positive face to the world.
Ultimately, the quote highlights the power of emotional endurance. It underscores the strength it takes to maintain a positive outward appearance, even in the face of adversity, and recognizes that strength can be found in various forms of emotional response.