The 32-year-old says that the mixture of experience and young blood is what drives the club "forward".
"Both our attacking and defensive game are based on pressing the opponent and getting forward right away," he told UEFA.com. "We play an aggressive, positive style of football.
"We are following the same objective, we want to win together, and we are only strong together. The input from the younger generation and the experience of the older generation – that takes us forward."
Dortmund won the Bundesliga in 2011 and 2012.