"Children's minds are more easily accepting of indoctrination, their bodies more adaptable to augmentation. The result was the ultimate soldier... And because of our success, when the Covenant invaded, we were ready."
"Dr. Halsey, you're bending history in your favor and you know it. You developed the Spartans to crush human rebellion, not to fight the Covenant."
"When one human world after another fell…When my Spartans were all that stood between humanity and extinction… Nobody was concerned over why they were originally built."
"So you feel in the end that your choices were justified.