I’m not an optimist. 

That makes me sound naïve. 

I’m a very serious “possibilist.” 

That’s something I made up. 

It means someone who neither hopes without reason, 

nor fears without reason, 

someone who constantly resists the overdramatic worldview. 

As a possibilist, I see all this progress, 

and it fills me with conviction 

and hope that further progress is possible. 

This is not optimistic.

(Hans Rosling,  #FactFullness)