Progress is impossible without change, and those who cannot change their minds cannot change anything.
Goals allow you to control the direction of change in your favor.
CHANGE, CONTROL THE DIRECTION OF CHANGE IN YOUR FAVOUR
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
Never believe that a few caring people can't change the world. For, indeed, that's all who ever have.
If you want to make enemies, try to change something.
make enemies, change something, change
When it is not necessary to change, it is necessary not to change.
When it is not necessary to change