Too little
Loose paraphrase
“They want nobody involved.”
A limited preference is converted into a sweeping statement.
Preserve the detail that changes the meaning.
Dispositional fidelity to the particulars and limits of what one observes or represents.
Exactitude is a disposition to be faithful to particulars when describing or acting on what is known. It concerns the care you take with truth, not exceptional memory or technical expertise. In helping, a convenient summary should not quietly become a different account.

“They would prefer a call tomorrow” becomes “They do not want visitors.” It is a beautifully efficient summary, except for the part where it says something else. Exactitude gives the inconvenient qualification its place back.
An illustrative everyday situation
You are passing along a friend’s request to someone who has offered support.
Too little
“They want nobody involved.”
A limited preference is converted into a sweeping statement.
A fitting response
“They asked for a call tomorrow rather than a visit today.”
The actual scope is preserved.
Pursued too far
“We cannot proceed until every irrelevant word is recorded.”
Precision loses its purpose and burdens the people it should help.
The important detail is the one that affects understanding or choice, not every detail you could collect.
If the detail makes no difference to the decision, extra checking can become a distraction. Spend your care where a mistaken account could actually mislead.
A person’s request can reach someone else without being enlarged or simplified beyond recognition. You can distinguish what was said from what you inferred, and check a relevant detail without making every conversation a transcription exercise.
Check the time or task rather than confidently fill a gap in memory.
Say that you heard something indirectly instead of giving it the authority of direct observation.
Honesty avoids misleading the overall understanding; Exactitude guards the particulars on which it rests.
Attentiveness notices; Exactitude preserves without distortion.
Many particulars can obscure that the central claim remains unverified.
An exact-looking number is not reliable merely because it has several digits.
Keep one important qualification in a summary.
Separate a quotation from your interpretation.
Check only the details that materially affect the next step.
Reread an ordinary message before passing it along. Separate the sender’s words from your own inference.
Distinguish what was said from what you inferred.
What changed when I shortened this account?
Am I being precise about something I actually know?
Do not collect or repeat unnecessary private information in pursuit of completeness. Accuracy does not grant professional authority or remove the need for appropriate procedures.
About these practices · DisclaimerSeven selections to return to through the week. Follow a source link to read the surrounding passage.
What you want are facts, not opinions
Florence Nightingale · Notes on Nursing · XIII, Observation of the Sick; p. 59 · excerpt
Nightingale distinguishes an observed account from a casual verdict. Preserve what was actually noticed when passing information along.
What the superior man requires, is just that in his words there may be nothing incorrect.
Confucius · Analects · XIII.3.7; Confucius speaking · James Legge translation · excerpt
The original discussion concerns names and government. Applied to care, exact words protect the scope of a person's request from being silently enlarged.
Read not to contradict and confute; nor to believe and take for granted; nor to find talk and discourse; but to weigh and consider.
Francis Bacon · Essays · Of Studies · excerpt
The reader's purpose should be understanding rather than ammunition. Check a source before repeating an impressive detail.
He who knows only his own side of the case, knows little of that.
John Stuart Mill · On Liberty · II, Of the Liberty of Thought and Discussion · excerpt
Mill asks for a real encounter with opposing reasons. A precise account preserves relevant qualifications, not just the details that favor your interpretation.
It implies withdrawal from some things in order to deal effectively with others,
William James · The Principles of Psychology, vol. I · XI, Attention; p. 404 · excerpt
James is describing attention. Exactitude requires selecting the details that affect understanding, rather than collecting every private fact.
or it so appears to me at present.
Benjamin Franklin · Autobiography · Part II, plan of moral perfection; Humility discussion · excerpt
Franklin adopts qualified language in place of unwarranted certainty. Mark an inference as an inference when accuracy depends on that distinction.
These people do not even observe that they have not observed nor remember that they have forgotten.
Florence Nightingale · Notes on Nursing · footnote 33 to XIII, Observation of the Sick · excerpt
The passage examines confident reports built from imagination. A missing detail should remain a gap rather than become an invented certainty.
Read freely, follow the fifteen-virtue program, or adapt this collection in My Virtues. You can pause or change direction; practice is not a judgment of your worth.