Georgia Guidestones - a guide to what?

Ok so I'm sure most people here have heard about the Georgia Guide stones. I just wanted to start a discussion of what you guys and gals think these things are for? Obviously "they" went through a lot of trouble to place these....and it's not like it's a tourist attraction.

These modern day monoliths were erected in 1980, and the following sort of cryptic messages can be found inscribed on them:

• Maintain humanity under 500,000,000 in perpetual balance with nature.
• Guide reproduction wisely — improving fitness and diversity.
• Unite humanity with a living new language.
• Rule passion — faith — tradition — and all things with tempered reason.
• Protect people and nations with fair laws and just courts.
• Let all nations rule internally resolving external disputes in a world court.
• Avoid petty laws and useless officials.
• Balance personal rights with social duties.
• Prize truth — beauty — love — seeking harmony with the infinite.
• Be not a cancer on the earth — Leave room for nature — Leave room for nature.

So many think that this pertains to the "ruling elites" depopulation agenda....but what do you think?