Full Idea
Those who named the soul thought that when the soul is present in the body, it causes it to live and gives it the power to breathe the air and be revitalized [anapsuchon].
Gist of Idea
Soul causes the body to live, and gives it power to breathe and to be revitalized
Source
Plato (Cratylus [c.375 BCE], 399d)
Book Reference
Plato: 'Complete Works', ed/tr. Cooper,John M. [Hackett 1997], p.118
A Reaction
I quote this to emphasis that Greek psuché is very different from the consciousness which is largely discussed in modern philosophy of mind. I find it helpful to make a real effort to grasp the Greek concept. The feeling of life within you.