John Owen has a timely word for today's Christian culture that seems to place more value on how we feel than on what we know. The cultivation of the mind is an important part of soul care:
The principal charge and care of the soul lies on the mind; and if that fail of its duty, the whole is betrayed, either as unto its general frame or as unto particular miscarriages. The failing of the mind is like the failing of the watchman in Ezekiel; the whole is lost by his neglect.
The Works of John Owen, Vol.VI (Banner of Truth)