Think big - John Cleese

Because, as we all know, it’s easier to do trivial things that are urgent than it is to do important things that are not urgent, like thinking. 
And it’s also easier to do little things we know we can do than to start on big things that we’re not so sure about.

quote by John Cleese

Majority - Mark Twain

Whenever you find yourself on the side of the majority, 
it is time to pause and reflect. 

quote by Mark Twain 

In conflict (the art of war)

In conflict, straightforward actions generally lead to engagement, 
surprising actions generally lead to victory.

quote by Sun Tzu, The art of war

Creation and destruction

Every act of creation is first an act of destruction.

quote by Pablo Picasso

(thanks Steven Michiels)

Creativity

Creativity requires the courage to let go of certainties

quote by Erich Fromm

A hammer and a nail

If all you have is a hammer in the toolbox, everything looks like a nail.

quote by Bernard Baruch

Design

A good design is not a democratic consensus.

quote by Edward de Bono

Creative genius

First, make yourself a reputation for being a creative genius.
Second, surround yourself with partners who are better than you are.
Third, leave them to go get on with it.

David Ogilvy

Creativity

The secret to creativity is knowing how to hide your sources.

Albert Einstein

Fantasy

When I examine myself and my methods of thought, I come to the conclusion that the gift of fantasy has meant more to me than any talent for abstract, positive thinking

Albert Einstein

Sign of insanity

There is nothing that is more certain a sign of insanity than to do the same thing over and over again and expecting the result to be different

quote by Albert Einstein