The quote from David Mamet's play "Oleanna" emphasizes the subjective nature of perception. It suggests that our understanding of other people's actions is filtered through our personal biases and experiences. This means that we do not see people for who they truly are but rather through the lens of our own beliefs and assumptions.

This idea highlights the complexity of human interactions and communication. Misunderstandings often arise because individuals interpret messages or behaviors differently based on their unique perspectives. Such interpretations can significantly influence relationships and social dynamics, reinforcing the importance of empathy and open dialogue in overcoming barriers caused by these screens of perception.