Sad, angry, jealous, and guilty feelings can make you a healthier person. Figuring out the reason for your negative emotions and learning from unpleasant experiences makes you stronger, and that success can bring happiness- but when you suppress and ignore negative emotions, you eliminate the balance of good and bad. Because the contrast of feeling sad is what makes feeling happy so wonderful, happiness wouldn’t really exist if you’d never truly embraced your sadness.  (, , )

Mary Shelley’s favorite keepsake was her dead husband’s heart. After Percy Shelley’s death, the Frankenstein author kept his heart – carrying it with her for almost 30 years until she died in 1851. A year later, it was then found in a desk drawer, wrapped in a copy of one of his final poems.  (, , )