Sutra 1.9

Picture from sipra's trip to the Southwest.

शब्दज्ञानानुपाती वस्तुशून्यो विकल्पः॥९॥

shabda gyaanaanu paathee vastu-shunyo vikalpa-ha

 ‘Imagination is thought based on images conjured up by words devoid of substance.’ - Prof. Ravi Ravindra. 
We live in our minds, recreating our past experiences and imagining our future. Yoga is about creating stillness in the mind which is attentive to the present moment, so that we may observe through silence the pure consciousness of our Being.