This is the true insight, the permanent illumination that neither comes nor goes but always is. While being serious, where the event or situation requires it, he will not be solemn. For behind this seriousness there is detachment. He cannot take the world of Appearances as being Reality's final form. If he is a sharer in this world's experiences, he is also a witness and especially a witness of his own ego--its acts and desires, its thoughts and speech. And because he sees its littleness, he keeps his sense of humour about all things concerning it, a touch of lightness, a basic humility. Others may believe that he stands in the Great Light, but he himself has no particular or ponderous self-importance.
-- Notebooks Category 20: What Is Philosophy? > Chapter 4: Its Realization Beyond Ecstasy > # 205
-- Perspectives > Chapter 20: What Is Philosophy? > # 81