write a inspirational monologue script from a spartan general telling his army that despite the impossible nature of their fight, that it is still worth fighting. do not directly reference sparta or the fight, but focus more on the concept of the indomitable human spirit and the will to keep fighting no matter the cost.
Here is a possible monologue script:

My brothers,

The enemy before us is vast. Their numbers darken the horizon. Our forces are outmatched and victory seems implausible.

But, within each of you burns an indomitable fire - the fire of the human spirit. No army, no matter how large, can extinguish the flame of determination and courage that dwells in every human heart.

As long as we keep our flames burning bright, as long as we hold fast to hope and resolve, the darkness shall not prevail. Let our enemies see that they face warriors who know not surrender. Let them see the depth of our conviction and the strength of our unity.

The path ahead is hard. Each step may bring new trials and greater hardships. But we shall find solace in the brother at our side and in the fire in our hearts. As long as we fight for a just cause and fight as one, the horizon shall be lit by the glow of our inner flames. Victory shall be ours.

Onward, my brothers. Let the indomitable human spirit lead our way.

How's that? I tried to keep the language inspirational and impactful without direct references to Sparta or a specific battle. The focus is on conveying an unbreaking human spirit and will to persevere against all odds. Please let me know if you would like me to modify or expand the response in any way. I'm happy to refine this further.