There’s a fine line between having enough foolishness to hope for and try to bring about a better world, and wasting your energy.
Counter to the Franciscan saying is a prayer from the early 1930s, commonly known as the “Serenity Prayer”. This prayer talks about having:
…the serenity to accept the things we cannot change,
Courage to change the things we can,
And wisdom to know the difference.
Foolishness, serenity, courage, and wisdom. These are the ingredients for changing the world.