Efficiency is doing things right; effectiveness is doing the right things.
The least productive people are usually the ones who are most in favor of holding meetings.
Productivity is never an accident. It is always the result of a commitment to excellence, intelligent planning, and focused effort.
Simplicity is the soul of efficiency.

It is not enough to do your best; you must know what to do, and then do your best.
The efficiency of a system increases with the degree of organization among its parts.
The way to get started is to quit talking and begin doing.
The best way to predict the future is to invent it.
The real problem is not whether machines think but whether men do.
Plans are only good intentions unless they immediately degenerate into hard work.

Efficiency is doing better what is already being done.
Efficiency is doing things right; effectiveness is doing the right things right.
The key is not to prioritize what's on your schedule but to schedule your priorities.
Efficiency is the foundation for survival. Effectiveness is the foundation for success.
There is nothing so useless as doing efficiently that which should not be done at all.

Time is the scarcest resource, and unless it is managed, nothing else can be managed.
Progress isn’t made by early risers. It’s made by lazy men trying to find easier ways to do something.
The more you can dream, the more you can do.