The voice of the intelligence is drowned out by the roar of fear. It is ignored by the voice of desire. It is contradicted by the voice of shame. It is biased by hate and extinguished by anger. Most of all it is silenced by ignorance.
There's much to be said for feeling numb. Time passes more quickly. You eat less and because numbness encourages laziness you do fewer things good or bad and the world's probably a better place for it.