The underlying principles of strategy are enduring, regardless of technology or the pace of change.
Michael Porter

The ability to change constantly and effectively is made easier by high-level continuity.
Michael Porter

The company without a strategy is willing to try anything.
Michael Porter

Sound strategy starts with having the right goal.
Michael Porter

The essence of strategy is choosing what not to do.
Michael Porter

Change brings opportunities. On the other hand, change can be confusing.
Michael Porter

So companies have to be very schizophrenic. On one hand, they have to maintain continuity of strategy. But they also have to be good at continuously improving.
Michael Porter

The thing is, continuity of strategic direction and continuous improvement in how you do things are absolutely consistent with each other. In fact, they're mutually reinforcing.
Michael Porter