From Halopedia, the Halo wiki
In October of 2558, the Swords of Sanghelios boldly set up a campsite within sight of Sunaion, and Thon made a personal recording on a data pad. He greatly admired the leadership of Arbiter Thel 'Vadam and was very impressed by his actions and wisdom. Thon was inspired at one point by 'Vadam when he once said 'Let us never forget those who have journeyed into the howling dark and did not return', unaware that these words actually originated from the Arbiter's human ally, Lord Terrence Hood.
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