This document discusses the importance of self-knowledge from a Spiritist perspective. It asserts that knowing oneself is the most effective way to guarantee self-improvement and resist wrongdoing. It recommends regularly examining one's conscience and actions to identify flaws and areas for reform. Self-knowledge is seen as an ongoing process of spiritual transformation that allows one to correct errors and develop in a positive manner according to spiritual teachings. The document provides biblical passages and quotes from Spiritist works to support these ideas.