Surely a better choice (for intance) would be:
'They shall beat their swords into plowshares, and their spears into pruning-hooks: nation shall not lift up sword against nation, neither shall they learn war any more. [Isaiah 2:4] '
Isn't really about ploughing either. It's just mentioned as part of an analogy.
I have a few suggestions, for quotes which I think aren't really appropriate. I mean, the discovery of Tribalism is supposed to be a good thing, but you get some quote from Ayn Rand telling you have evil it is.
Some suggestions:
Tribalism
“Call it a clan, call it a network, call it a tribe, call it a family: Whatever you call it, whoever you are, you need one.” -Jane Howard
Trench Warfare
''A shell crater covered met cans of salted meat, broken weapons, shreds of uniforms, duds and one or two corpses hanging over the edge... this was the unchanging landscape in which hundreds of thousands of men had to live in, day in day out.''
-Ernst Junger
Equine Domestication
''You've got to control yourself before you can control your horse.'' -Ken Alstad
Slash and Burn
''The mode of clearing and planting is to fell the trees, and burn once what will burn, then cut them up into suitable lengths, roll... The mode of clearing and planting is to fell the trees, and burn once what will burn, then cut them up into suitable lengths, roll into heaps, and burn again; then, with a hoe, plant potatoes where you can come at the ground between the stumps and charred logs; for a first crop the ashes suffice for manure, and no hoeing being necessary the first year. In the fall, cut, roll, and burn again, and so on, till the land is cleared; and soon it is ready for grain, and to be laid down. '' -Henry David Thoreau
Skinning
''There are more ways of skinning a cat than rubbing its fur the wrong way.'' -J. Carter Brown
Vassalage
''Our hearts must grow resolute, our courage more valiant,
our spirits must be greater, though our strength grows less.
Here lies our Lord all hewn down, goodly he lies in the dust.
A kinsman mourns whoever thinks to run away from this battle.
I am advanced in years. I do not desire to be taken away,
but I intend to lie by my liege lord, that favourite of men. ''
-The Battle of Maldon
Gunpowder
'Put your trust in God, but mind to keep your powder dry.' -Oliver Cromwell
Piracy
''Life's pretty good, and why wouldn't it be? I'm a pirate, after all.'' -Johnny Depp
Geometry
''Do not disturb my circles.'' -Archimedes (last words, upon noticing a Roman soldier trampling on his geometrical studies in his garden)
Obsidian Weapons
''The blade itself incites to violence.'' -Unknown.
Nationalism
''A glorious death is his who for his country falls.'' -Homer
Leadership
''Men are basically smart or dumb and lazy or ambitious. The dumb and ambitious ones are dangerous and I get rid of them. The dumb and lazy ones I give mundane duties. The smart ambitious ones I put on my staff. The smart and lazy ones I make my commanders.'' -Erwin Rommel
Imperialism
''How can you, who have got such possessions and so many of them, covet our poor tents? If Rome wants to rule the world, does it follow that everyone else wants to be her slave?'' -Caratacus, British chieftain captured by the Romans.
Chiefdom
''In the field of battle, it is disgraceful for the chief to be surpassed in valor; it is disgraceful for the companions not to equal their chief.'' -Tacitus, about the Germans.
Siege Warfare
''You are like the barbarians who, usually, when they are blockaded, having no knowledge of the engines of war, watch with indifference the effort of the besiegers.'' -Seneca
Things have advanced considerably since you left, for one I sort of took over your primary work area. (gamespeed/civic balance)
