We’ve often heard that shallow water makes a noisy splash. The inference is, that loud talk is often accompanied by minimal action. Of what use is talk without action?
The Subhaashitkars of earlier times seem to have had this same thought- as can be seen in the following couple of Subhaashits.
शरदि न वर्षति गर्जति, वर्षति वर्षासु निःस्वनो मेघः |
नीचः वदति न कुरुते, वदति न साधुः करोत्येव ||
In Autumn (शरदि) (The cloud) thunders (गर्जति), but gives forth no rain (न वर्षति). During the Monsoon (वर्षासु) the soundless (निःस्वनः) cloud (मेघः) yields rain (वर्षति).
An inferior person (नीचः) talks but does not act (वदति न कुरुते), (while) a great/virtuous person (साधुः) performs (करोति) without talking (वदति न).
The Autumn cloud makes much noise, but does not follow it up with showers. The cloud of the rainy season, on the other hand, goes about its work silently and showers life-giving rain upon the parched earth.
यथा चित्तं तथा वाचः यथा वाचस्तथा क्रियाः |
चित्ते वाचि क्रियायाञ्च साधूनामेकरूपता ||
As is the mind (यथा चित्तं) so is the speech (तथा वाचः), (and) as is the speech (यथा वाचः) so is the action (तथा क्रियाः).
There is uniformity (एकरूपता) in thought, speech and action (चित्ते वाचि क्रियायाञ्च) of a great person (साधूनां ).
A good person articulates his thoughts and then acts upon his words. There is no contrast between his thoughts, words and actions.