Heart and head are the constituent parts of character; temperament has almost nothing to do with it, and, therefore, character is dependent upon education, and is susceptible of being corrected and improved.
“Clearly, some creative thinking is badly needed if humans are to have a future beyond Earth. Returning to the Moon may be worthy and attainable, but it fails to capture the public's imagination. What does get people excited is the prospect of a mission to Mars.”