He walked all alone, not knowing which path to choose or when to stop.
He just carried on like a walking corpse.
He had forgotten his important family and friends and left without a last glimpse of them.
He enjoyed living in solitude.
He didn't know the true meaning of life or his purpose.
To him life meant nothing.
He saw life as something which had to be lived.
He didn't understand why people craved so much for their life.