Meaning of “There is a vital difference between error and…”

Even respected language can be quoted selectively, so a citation should be judged by context and purpose rather than authority alone.

Intellectual honesty includes marking uncertainty rather than upgrading a guess into a fact, a habit that makes speech more reliable and accountable.

Repeated deception damages credibility beyond the original lie: once listeners have learned to expect false alarms, even a later truthful warning can fail to restore belief in time.

Keller explicitly rejects an optimism that refuses to see harm, making clear-eyed attention to difficult facts part of her constructive outlook.

The claim values genuine conviction over calculated pose in literary work, while allowing that sincere writers can still be factually or critically mistaken.

Honorable speech is presented as expression that can be trusted because it does not depend on concealment, manipulation or a second hidden meaning.