We systematically overestimate the value of access to information and underestimate the value of access to each other.

Clay Shirky

There is real magic in enthusiasm. It spells the difference between mediocrity and accomplishment.

Norman Vincent Peale

He who is not courageous enough to take risks will accomplish nothing in life.

Muhammad Ali

Courage is what it takes to stand up and speak; courage is also what it takes to sit down and listen.

Winston Churchill

Happiness is not a station you arrive at, but a manner of travelling.

Margaret B. Runbeck

Please hear what I am not saying.

Charles C. Finn

Je gaat het pas zien als je het doorhebt.

Johan Cruijff

No plan of battle ever survives contact with the enemy.

Helmuth von Moltke

Wars may be fought with weapons, but they are won by men. It is the spirit of the men who follow and of the man who leads that gains the victory.

I don't measure a man's success by how high he climbs but how high he bounces when he hits bottom.

George S. Patton

A good plan today is better than a perfect plan tomorrow.

George S. Patton

The most successful people are those who are good at Plan B.

James Yorke

The artist is nothing without the gift, but the gift is nothing without work.

Emile Zola

The most serious mistakes are not being made as a result of wrong answers. The true dangerous thing is asking the wrong question.

Peter Drucker

Conflict is inevitable, but combat is optional.

Max Lucade

The art of leadership is saying no, not yes.  It is very easy to say yes. 

Tony Blair

If you don’t get the requirements right, it doesn’t matter how well you do anything else.

Karl Wiegers

A good leader is a person who takes a little more than his share of the blame and a little less than his share of the credit. 

John C. Maxwell

Doof uw inspiratie en verbeeldingskracht niet uit, wordt geen slaaf van 't model.

Vincent van Gogh

Leaders don't create followers, they create more leaders. 

Tom Peters

Remember the difference between a boss and a leader; a boss says "Go!" - a leader says "Let's go!" 

E.M. Kelly

Everything that we see is a shadow cast by that which we do not see.

Martin Luther King

The ultimate measure of a man is not where he stands in moments of comfort and convenience, but where he stands at times of challenge and controversy.

Martin Luther King

An individual has not started living until he can rise above the narrow confines of his individualistic concerns to the broader concerns of all humanity.

Martin Luther King

Be like a postage stamp, stick to one thing until you get there.

Josh Billings