We all change, all through our lives. But the essence of us, our idiosyncrasies, innermost convictions, personal goals, and hopeless addiction to Doctor Who (just face it, already), should never have to be compromised, even when it is challenged by others. After exhausting thirteen incarnations, who have each faced perplexing dilemmas, malicious foes, and heartrending loss, the Doctor can testify to this essential truth. He is a man who has worn many different faces, has seen entire galaxies flourish and decay with time. Yet behind those weary, crestfallen eyes, the same Time Lord, our favourite companion for whizzing across the televisual cosmos, carries on. He will always be the same arrogant, affable and deranged idiot with a box. He will always be the Doctor. What did you think of this list? Are there any other important life lessons that Doctor Who has taught you better than your parents? Share your Whovian words of wisdom in the comments section below!