Who said The thing that matters most is that nothing really matters?

The quote "The thing that matters most is that nothing really matters" is often attributed to the American author and philosopher Albert Camus, reflecting his existentialist views. It encapsulates a sense of absurdism, emphasizing the idea that in the grand scheme of existence, traditional values and meanings may be insignificant. However, the exact phrasing may vary, and interpretations of its meaning can differ among readers.