A Systems Thinker is a person who has learned to reverse our natural tendency to fragment the world around us in order to gain understanding, by looking for wholes and the interrelationships that make those wholes a system.

Barry Richmond

The only difference between dreams and achievements is hard work.

Chris Bollwage

De intensiteit van een hardlooptraining kan worden aangegeven in termen van hartslag of snelheid. In de onderstaande tabel worden de mogelijke intensiteiten weergegeven verdeeld over vijf zones. De terminologie en methode verschillen, maar de intensiteiten verschillen eigenlijk nauwelijks.

* HF-max = maximale hartslagfrequentie. HF anaerobe drempel = hartslagfrequentie van het omslagpunt, de zgn. anaerobe drempel. Bij een goed getrainde loper is de HF-anaerobe drempel 15-20 slagen lager dan de HF-max.

When placed in the same system, people, however different, tend to produce similar results.

Peter Senge

Cause change and lead;
accept change and survice;
resist change and die.

Ray Norda

Managers are not confronted with separate problems but with situations that consist of complex systems of strongly interacting problems. I call such situations messes.

Russell Ackoff

Dreamers look into the future and see promise. Those who do not dream only see the future.

D. Elder

If you have a burning desire and a plan to take action, there is absolutely nothing you cannot achieve.

Thomas J. Vilord

The fastest way to pass your own expectations is to add passion to your labor.

Mike Litman