Thanissaro Bhikkhu writes:
:The Sabbasava Sutta (MN 2) states that one's release can be "fermentation-free" only if one knows and sees in terms of "appropriate attention" (yoniso manasikara). As the discourse shows, appropriate attention means asking the proper questions about phenomena, regarding them not in terms of self/other or being/non-being, but in terms of the four noble truths. In other words, instead of asking "Do I exist? Don't I exist? What am I?" one asks about an experience, "Is this stress? The origination of stress? The cessation of stress? The path leading to the cessation of stress?" Because each of these categories entails a duty, the answer to these questions determines a course of action: stress should be comprehended, its origination abandoned, its cessation realized, and the path to its cessation developed.<ref>[https://www.
accesstoinsight.org/ lib/ authors/ thanissaro/onetool.html One Tool Among Many ( Access to Insight)]</ref>