स्पृशन्ति शरवत्तीक्ष्णाः स्तोकमन्तर्विशन्ति च |
बहुस्पृशाऽपि स्थूलेन स्थीयते बहिरश्मवत् ||
Wise men are like arrows. They touch very lightly and penetrate by making the slightest slit. Even when explained with few words, they understand the entire picture. But idiots are like stones. They make huge impact but can not penetrate. Even after repeated explaining, they still can not understand.