Be careful of your thoughts, for your thoughts become your words.
Be careful of your words, for your words become your deeds.
Be careful of your deeds, for your deeds become your habits.
Be careful of your habits, for your habits become your character.
Be careful of your character, for your character becomes your destiny.
Mother Teresa
Speaking of Mother Teresa, when she came all the way to Japan, she visited our university. Luckily, I had a chance to listen to her precious speech.