"Don't judge others based on their look" - he may have looked different but as time went by he emerged as a beautiful swan - No matter how are things were/seemed for the ugly duckling, he never gave up, he accepted what he was an later emerged as a beautiful swan.
"Bloom were you are Planted" - It doesn't matter where you came from in the beginning, all that matters is what you make out of that situation, it's up to you, and no one else.