Augustine of Hippo
A slanderer does not seek to ensnare himself with his words; instead, he contemplates in his heart. I was speaking aimlessly. Here is the previous aimless speaking. Pay attention once more, so that your spirit does not grow faint. He asserts that he did not speak as he did elsewhere: this is different. What now? I was verbose and sought out my soul. If he had searched the earth for veins of gold, nobody would have deemed him unwise; in fact, many would have praised him for his desire to mine for precious metal: such immense treasures lie hidden within humanity, yet few take the effort to uncover them! This man delved into his spirit and spoke from that very core, and in doing so, he rambled. He was engaging in self-reflection, scrutinizing himself, being his own judge.
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He continues; I was exploring my spirit. He needed to be cautious about remaining trapped in his own soul: for he had spoken irresponsibly on the outside; and since his adversaries were vigilant, he encountered distress, leaving his spirit fatigued. The one who once spoke thoughtlessly outside now begins to express himself from within, securely, where, in solitude, he contemplates eternal existence.