I hope for the day when everyone can speak again of God without embarrassment.

Tillich is lamenting a modern cultural situation in which “God-talk” has become socially awkward—either because it is associated with naïve supernaturalism, political manipulation, or a loss of shared religious language. His hope is not simply for a return to conventional piety, but for a renewed intellectual and existential seriousness about ultimacy: that people could name “God” as the depth-dimension of reality and of human concern without apologizing for it or reducing it to cliché. The line fits Tillich’s broader project of translating Christian symbols into concepts that can be heard within secular modernity, so that religious language can again function as a meaningful way of speaking about anxiety, meaning, and ultimate concern.