Who said that socialism is like a hat that lost its shape because everybody wears it?

The quote about socialism being like a hat that lost its shape because everybody wears it is attributed to the French writer and philosopher Albert Camus. He used this metaphor to express the idea that socialism, like a common hat, can lose its distinct meaning and purpose when it is widely adopted without critical engagement. This reflects Camus's broader concerns about the dilution of ideals in political movements.