I think that those who serve most potently, work on levels of consciousness that have to do with radiating love — maybe God's love... It is important that you have a brain and use it, but that is secondary. The basic premise is that you allow something to come through you. Then you use your intelligence to give your heart's work discipline and logic. But the transformative energy, that which can change events, that heals, that helps, that serves, comes from somewhere deep inside.
The most beautiful words, those that give the most genuine help, are often born in a silence filled with suffering. Silence is the glowing furnace of the word, the forge of true speech and sensitivity.