"Now, these four are noble searches. Which four? There is the case where a person, being subject himself to aging, realizing the drawbacks of what is subject to aging, seeks the unaging, unsurpassed rest from the yoke: Unbinding. Being subject himself to illness, realizing the drawbacks of what is subject to illness, he seeks the unailing, unsurpassed rest from the yoke: Unbinding. Being subject himself to death, realizing the drawbacks of what is subject to death, he seeks the undying, unsurpassed rest from the yoke: Unbinding. Being subject himself to defilement, realizing the drawbacks of what is subject to defilement, he seeks the undefiled, unsurpassed rest from the yoke: Unbinding.
"These are four noble searches."