“The spirit of God is always a spirit of peace, and in the case of grave sin, it makes us feel a tranquil sorrow, humble, confident, and this is due to His mercy.
The spirit of the demon, on the contrary, makes us in our sorrow feel something like anger against ourselves, whereas our first charity must be towards ourselves. So, if certain thoughts agitate you…Such agitation comes from the devil.” [St Pio]