I ought to have judged by deeds - The Little Prince, by Antoine de Saint−Exupery

 "The fact is that I did not know how to understand anything! I ought to have judged by deeds and not by words. She cast her fragrance and her radiance over me. I ought never to have run away from her... I ought to have guessed all the affection that lay behind her poor little stratagems. Flowers are so inconsistent! But I was too young to know how to love her..."The Little Prince, by Antoine de Saint−Exupery