Oh Say, What is Truth?

The title of this blog begs a question: What is Truth?

J. Richard Clarke spoke on "The Practice of Truth" in the May 1984 Ensign, where he quoted William George Jordan:

Truth … as loyalty to the right as we see it; it is courageous living of our lives in harmony with our ideals; it is always—power.
Truth … defies full definition. Like electricity it can only be explained by noting its manifestation. It is the compass of the soul, the guardian of conscience, the final touchstone of right. Truth is the revelation of the ideal; but it is also an inspiration to realize that ideal, a constant impulse to live it.
[One] who makes Truth his watchword is careful in his words, he seeks to be accurate, neither understating nor over-coloring. … What he says has the ring of sincerity, the hallmark of pure gold. … His promise counts for something, you accept it as being as good as his bond, you know that no matter how much it may cost him to verify and fulfil his word by his deed, he will do it. (Power of Truth, Salt Lake City: Deseret Book Co., 1935.)