There are at least three different categories of truth: physical truth, moral truth and spiritual truth. Physical truths rely on proven facts. These truths are found through a search for data and raw knowledge. These kinds of truths, often scientific in nature, carry no guarantee to benefit society. Knowledge of the structure of atoms, for example, can be used for good or for evil.
Moral truth follows intuition and conscience. It is governed by what is just and carries an honorable, enlightened desire to improve society. With the help of moral truth, logic directs human behavior and knowledge of physical truths is complemented by learning.
Spiritual truths are those which come by personal revelation. A society guided by spiritual truth is permeated by love and righteousness and faith in God. To knowledge of physical truth and the learning of moral truths spiritual truth adds the organized, clear vision of wisdom.
Truth, in all instances, makes us free (John 8:32). Victor Ludlow has stated: "Truth does not just free us from damning bondages of ignorance, fear, and sin, but it also frees us toward favorable liberties of health, opportunity, and service" (22). When we live according to truth, we are happier; or, in other words, when we obey the commandments of God we are blessed (D&C 130:20-21). As we live a higher law-- or follow a greater truth-- we are more blessed, more liberated and more enlightened.
"Principles and Practices of the Restored Gospel" by Victor Ludlow
Truth: The Foundation of Correct Decisions by Elder Richard G. Scott