According to Osho, 'what was golden has gone from the world' means the mainstream world has lost the inner, meditative spirit that births a golden age; people chase professions, mock awakening, and live outwardly. Yet in conscious spaces—like the Buddha Auditorium—by turning inward you become contemporaneous with awakened ones and revive that golden fragrance here and now.
Most people forgot how to look inside, but if you meditate and create mindful spaces, the lost 'golden age' of wisdom returns.