The search for truth will reward the seeker at every turn, and each discovery will open up richer fields for his investigation. Men are changed in accordance with what they contemplate. If commonplace thoughts and affairs take up the attention, the man will be commonplace. If he is too negligent to obtain anything but a superficial understanding of God’s truth, he will not receive the rich blessings that God would be pleased to bestow upon him. It is a law of the mind, that it will narrow or expand to the dimensions of the things with which it becomes familiar. The mental powers will surely become contracted, and will lose their ability to grasp the deep meanings of the word of God, unless they are put vigorously and persistently to the task of searching for truth. The mind will enlarge, if it is employed in tracing out the relation of the subjects of the Bible, comparing scripture with scripture, and spiritual things with spiritual. Go below the surface; the richest treasures of thought are waiting for the skillful and diligent student.
– Christian Education, pg. 119