Hi Homer,
The following is contained in Ability issue 125 by LRH
Feb, 1961

Personal Integrity

WHAT IS TRUE FOR YOU is what you have observed yourself.
And when you have lost that you have lost everything.

What is personal integrity?
Personal integrity is knowing what you know-
what you know is what you know-
And to have the courage to know and say what you have observed.
And that is integrity.
And there are no other integrity.

Of course we can talk about honor, truth, all these things,
These esoteric terms.
But I think they'd all be covered very well
If what we really observed was what we really observed,
That we took care to observe what we are observing,
That we always observed to observe.

....

Nothing in Dianetics and Scientology is true for you
Unless you have observed it
And it is true according to your observation.
That is all.
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I left out a few lines so as not to infringe on copyright laws.