I saw this plaque today, and I immediately thought of YW lesson on Sunday (Lesson 41, Manual 2) on Optimism.  We discussed how it physically effects you to be with depressing people - they are like emotional vampires that drain your energy.  Here, this quote from Voltaire, reminds us that HAPPINESS {or Positivity, or Optimism} is actually beneficial for our health. 

How do you feel when you're happy? How do you make others feel?  

Click here to purchase this lovely plaque. It's from MB Art Studios.