There are parts of the Church that tend to downplay the role of the mind in the faith experience. The deeper Tradition of the Church, however, understands the mind to be very much an integral part of the spiritual life. It is the mind at the service of love, no doubt, but it is integral. There is a rich cooperation between the mind and God. How can there not be? "God is light" (I John 1:5).
Jesus is not advocating that we become financial sharks. He makes this clear in the closing of his discourse, in the application of the parable: "you cannot serve God and wealth". Jesus is aware of how readily and easily we become shrewd and clever for money. We are similarly to become shrewd and clever for God. We are to be intelligent for God. When it comes to the faith experience, we do this, by awakening our mind to the world around us and, in faith, to God's presence in our midst, in the light of which can discern all things for their true value.
Your fellow seeker of divine light,