What is meant by The greatest of all illusions is permanence?

The phrase "The greatest of all illusions is permanence" suggests that nothing in life is truly permanent or unchanging, despite our perceptions or desires for stability. It highlights the transient nature of existence, where everything—from relationships to material possessions—can shift or fade over time. This idea encourages mindfulness and acceptance of change, reminding us to appreciate the present rather than clinging to the illusion of lasting security.