They must often change, who would be constant in happiness or wisdom.
CHANGE, CONSTANT IN HAPPINESS OR WISDOM
Find joy in everything you choose to do. Every job, relationship, home... it's your responsibility to love it, or change it.
Never believe that a few caring people can't change the world. For, indeed, that's all who ever have.
Very often a change of self is needed more than a change of scene.
change of self, change of scene
One must change one's tactics every ten years if one wishes to maintain one's superiority.
one must change, tactics, ten years, wishes, maintain