Space colinization!

Okay so after reading up on it the director of nasa states that he doesnt think we have the technology to get the materials from different planets, do you think he is right or wrong?

Earth isn't quite depleted yet, and we have no technology to return men and materials from other planets (because putting things into orbit takes huge amounts of fuel which weight a lot; rockets will need to be many times more powerful than Atlas V or Energia to bring a few thousands kilograms of ore back to Earth).

But colonization needs to be started right now.  I think we should produce as much robotic probes and builders as possible and send them around Solar system to test new propulsion systems and possibility of using different building materials to construct planetary bases.