Who has not sat, afraid, before his own heart’s curtain?

The line frames inner life as a kind of theater: the “heart’s curtain” suggests a stage behind which one’s most private feelings and truths wait to be revealed. To “sit, afraid” before it evokes the common human hesitation to face what we most deeply know—grief, desire, guilt, longing—because self-knowledge can be as destabilizing as it is clarifying. The rhetorical question (“Who has not…?”) universalizes the experience, turning personal dread into a shared condition. In Rilke’s broader poetic world, such fear is often the threshold to transformation: confronting the heart’s hidden drama becomes a prerequisite for authenticity, love, and artistic or spiritual maturation.