“In any economy, the entire population is supported by the part of it that is working. All other things being equal, it thus follows that the most attractive acquisition a society can have is a young adult, whose childhood and education has already been paid for, but whose entire working life still lies ahead.”

American aerospace engineer and author

Robert Zubrin is an American aerospace engineer, author, and advocate for human exploration of Mars. He is known for arguing that space will shape future military and political power, and for making the case for a stronger American role in space. His writing often turns on Mars exploration and on the strategic importance of space. He has also argued that control of space will matter in future conflict, and that peace on Earth depends on preparing for war beyond it.