"In our heads we're all about 33 years old"

This quote by Doug Coupland talks to the idea that, no matter our age, all of us have a particular level of maturity and understanding that corresponds across generations. It suggests that, while we might be physically aging, our mental age remains reasonably continuous. This might be analyzed as a suggestion to remain young at heart and to not let age define us. It might also be viewed as a pointer to remain open-minded and to not let our age limit our experiences. Eventually, this quote motivates us to remain curious and to keep learning, no matter our age. It is a reminder that age is just a number and that we need to strive to remain young in spirit.