Last week we said that amongst the discoveries made at Mohenjodaro and Harappa were images of the figures sitting in postures of meditation. Yet we find that the prince left the two teachers because He found that meditation alone could not permanently end suffering. This is important because, although in its emphasis on mental development Buddhism is very much in the tradition of the Indus Valley Civilization, yet the Buddha goes beyond the tradition of mere meditation. This is what distinguishes the Buddha's teachings from the teachings of many other Indian schools, particularly the teachings of the tradition of Yoga. It is also what distinguishes Buddhism from some of the contemplative traditions of other religions, because in Buddhism meditation by itself is not enough.
Meditation is like sharpening a pencil, sharpening the mind so to speak.
Just as when we sharpen a pencil we sharpen it for a purpose, so that we can write with it, so in sharpening the mind we have a purpose and that purpose is wisdom. Sometimes this relationship between meditation and wisdom is exemplified by the example of a torch. Suppose we want to see a picture in a darkened room with a torch. If there are many draughts in the room, we will find that the light of the torch will flicker. Similarly, if our hand shakes, the light cast by the torch will be unsteady, and we will be unable to see the image.