user-1: List below is extracted form Kimattha Sutta noting how skillful virtues lead step-by-step to the consummation of arahantship.  
The question is does skillful virtue require knowledge of non-self or knowledge of non-self is achieved at step 8 when one contemplate on impermanence / conditioned nature of all things including serenity and pleasure one get from virtuous act?

Skillful virtues
freedom from remorse
joy
rapture
serenity
pleasure
concentration
knowledge & vision of things as they actually are
disenchantment
dispassion
knowledge & vision of release
consummation of arahantship


user295: Whatever that is unsatisfactory is not self. Whatever is impermanent is not satisfactory. This is a realisation by direct experience not a form of contemplation. This realisation happens at the stage of "knowledge & vision of things as they actually" which in turn triggers the next stage.

-1: <p>List below is extracted form Kimattha Sutta noting how skillful virtues lead step-by-step to the consummation of arahantship.  </p>

<p>The question is does skillful virtue require knowledge of non-self or knowledge of non-self is achieved at step 8 when one contemplate on impermanence / conditioned nature of all things including serenity and pleasure one get from virtuous act?</p>

<ol>
<li>Skillful virtues</li>
<li>freedom from remorse</li>
<li>joy</li>
<li>rapture</li>
<li>serenity</li>
<li>pleasure</li>
<li>concentration</li>
<li>knowledge &amp; vision of things as they actually are</li>
<li>disenchantment</li>
<li>dispassion</li>
<li>knowledge &amp; vision of release</li>
<li>consummation of arahantship</li>
</ol>
 295: <p>Whatever that is unsatisfactory is not self. Whatever is impermanent is not satisfactory. This is a realisation by direct experience not a form of contemplation. This realisation happens at the stage of "knowledge &amp; vision of things as they actually" which in turn triggers the next stage.</p>
