Here are the essential principals expressed throughout the book:

"Thinking is one of the important ways that we put the fuel of knowledge on the fires of worship and service to the world."

"The task of all Christian scholarship—not just biblical studies—is to study reality as a manifestation of God’s glory, to speak and write about it with accuracy, and to savor the beauty of God in it, and to make it serve the good of man. It is an abdication of scholarship when Christians do academic work with little reference to God. If all the universe and everything in it exist by the design of an infinite, personal God, to make his manifold glory known and loved, then to treat any subject without reference to God’s glory is not scholarship but insurrection."

‎"Most scholars know that without the support of observable objects to deal with (texts, witnesses, chemicals, people, behavior, etc.), affections degenerate into groundless emotionalism. But not as many scholars recognize the converse: that without the awakening of true spiritual affections, seeing the fullness of truth in all things is impossible. Without a spiritual wakefulness to divine purposes and connections in all things, we will not know things for what they truly are."

‎"Where Christian faith is securely rooted, where it penetrates deeply into a culture to change individual lives and redirect institutions, where it continues for more than a generation as a living testimony to the grace of God—in these situations, we almost invariably find Christians ardently cultivating the intellect for the glory of God.7"

"Reject either-or thinking when it comes to head and heart, thinking and feeling, reason and faith, theology and doxology, mental labor and the ministry of love."

"The mind provides the kindling for the fires of the heart. Theology serves doxology. Reflection serves affection. Contemplation serves exultation. Together they glorify Christ to the full."

Piper, John; Mark A. Noll (2010-09-15). Think: The Life of the Mind and the Love of God (Kindle Locations 2486-2487). Good News Publishers/Crossway Books. Kindle Edition.