The Doctor said "Imn planning on investigating this myself.....I also have another plan but m deciding to keep it a secret."
Lex had a idea anhd said "Why Doctor? How can we trust you? Your a timelord....you have knowledge far beyond us alll...you have knowledge of technology that can advance our society, and your blue box that you claim can travel anywhere in space and Time....if you can trust us.. how can we trust you all?"
The Doctor looked at Luthor "Luthor.....I know knowledge and secrets that can destroy us...i keep them because our time isnt ready for it.....I know more about time then anyone here....trust me Luthor....mankind isnt ready.."