During periods of ...

During periods of discontinuous, abrupt change, the essence of adaptation involves a keen sensitivity to what should be abandoned - not what should be changed or introduced. A willingness to depart from the familiar has distinct survival value.
During periods of discontinuous, abrupt change, the essence of adaptation involves a keen sensitivity to what should be abandoned - not what should be changed or introduced. A willingness to depart from the familiar has distinct survival value.

Quotes from the same author

The entrepreneur always searches for change, responds to it, and exploits it as an opportunity.
Efficiency is doing things right; effectiveness is doing the right things.
The best way to predict your future is to create it.
There is nothing so useless as doing efficiently that which should not be done at all.
Follow effective action with quiet reflection. From the quiet reflection will come even more effective action.