It was my duty to shoot the enemy, and I don't regret it. My regrets are for the people I couldn't save: Marines, soldiers, buddies. I'm not naive, and I don't romanticize war. The worst moments of my life have come as a SEAL. But I can stand before God with a clear conscience about doing my job. Chris Kyle
Read more at https://www.brainyquote.com/search_results?q=stand+up+for+your+beliefs&pg=6