Sergei Krikalev
I just read a report on the ABC news that Russian cosmonaut Sergei Krikalev has just set a record for the most days spent in space. Over his 20 year career, he has managed to clock up almost 748 days in space and many record breaking firsts.
His extensive contributions to space science include Ruglish, "When we are short of words in one language we can use the other".
Here is a good quote by him about humanity;
"The farther you travel, the more you feel kind of part of a big group of people, and traveling outside of Earth. I remember this feeling, being part of mankind. We represent not only our hometown, or even our countries in space. It's more like an international adventure." Sergei Krikalev on the Discovery Channel website