The Power of Truth gathers eight short essays on what Jordan calls individual problems and possibilities. The tone is serious and direct, and each essay takes a single moral quality and presses the reader to make it real in daily conduct rather than admire it in theory.
The title essay sets the keynote. Truth is the rock foundation of every great character, loyalty to the right as one sees it, lived in harmony with one's ideals. Jordan contrasts this with lying, which he calls the sacrifice of honor to create a wrong impression. The honesty he wants is not policy or best practice; it is honesty a person would keep even alone, and it shows up first in careful, accurate speech. He frames the power of truth as four relations: loving truth for itself, searching to be sure one is right, having faith that right will finally triumph, and working to spread truth by living it.
From sincerity the essays move outward to the courage it demands. The Courage to Face Ingratitude treats thanklessness as the most common sin of humanity and asks the reader to do right anyway, like a sun that radiates because it must, without collecting receipts. People who Live in Air Castles warns against the comfort of vague future plans: a person should be architect and builder both, forsaking castles of dreaming for strongholds of doing. Swords and Scabbards contrasts outer show with intrinsic worth, urging readers to keep the blade of purpose keen and to compete only with their own yesterday.
The middle essays turn to how a person handles the world and other people. The Conquest of the Preventable argues that most sorrow is human-made, traceable to broken laws and to the habit of blaming Providence or other people for one's own choices. The Companionship of Tolerance defines tolerance as a calm, generous respect for the opinions of others, even enemies, and asks the reader to attack the sin without attacking the sinner, keeping the windows of life open to truth from any source.
The final two essays take a longer view. The Things that Come too Late reads delayed honors and late wisdom as proof that humanity is slowly moving toward justice, and turns this into a warning not to withhold kindness until it is too late. The Way of the Reformer honors those who follow conviction at personal cost, then counsels care: weigh a life's great aim honestly, hear all counsel, decide for oneself, and then hold to the chosen work. Across the book, the steady claim is that character is built inwardly, by truth lived and self governed, before it shows in the world.