आङ्गिकौ वाचिकश्चैव ह्याहार्यः सात्विकस्तथा । चत्वारोऽभिनया ह्येते विज्ञेया नाट्यसंश्रयाः ॥ २३॥
The physical, verbal, and emotional expressions, as well as the visual ones, are the four types of performance, and these are recognized as the foundation of drama.
english translation