In Lewis Carroll's "Alice in Wonderland," the quote "I can't return to yesterday because I was then someone different" reflects the idea of personal change and the passage of time. It suggests that who we are today is shaped by our experiences, making it impossible to revisit past selves. This quote emphasizes the fluid nature of identity and growth, highlighting that each moment transforms us into someone new.

Such a sentiment encourages embracing change rather than longing for the past. It reminds us that our past selves belong to a different time and cannot be reclaimed. Recognizing this can inspire us to focus on the present and future, understanding that change is an essential part of life's journey.