Reflection on the past is the source of wisdom for the future.
The earth is just a dot in the universe.
The beauty of life is, while we cannot undo what is done, we can see it, understand it, learn from it and change. So that every new moment is spent not in regret, guilt, fear or anger, but in wisdom, understanding and love.
"In the end, we will remember not the words of our enemies, but the silence of our friends."