A good theory is one that hold together long enough to get you to a better theory.

Donald O. Hebb

A man travels the world over in search of what he needs and returns home to find it.

George Moore

If you never change your mind, why have one?

Edward de Bono

Knowing little makes it easier to fit everything you know into coherent pattern.

Dan Kaneman

Laziness is nothing more than the habit of resting before you get tired.

Jules Renard

You can tell whether a man is clever by his answers. You can tell whether a man is wise by his questions.

Naguib Mahfouz

"What day is it?". "Its today" squeaked Piglet. "My favorite day" said Pooh.

Van de dingen die pijn doen, leer je het meest.

Benjamin Franklin

Zoet is de kern van tegenspoed die, zoals de pad, dat lelijk giftige dier, in het hoofd toch een kostbaar juweel draagt.

William Shakespeare

Wise men talk because they have something to say; fools, because they have to say something.

Plato

The state of your life is nothing more than a reflection of your state of mind.

Wayne Dyer

People discuss my art and pretend to understand as if it were necessary to understand, when it's simply necessary to love.

Claude Monet

Intellectuals solve problems, geniuses prevent them.

Albert Einstein

I have always thought the actions of men the best interpreters of their thoughts.

John Locke

Real knowledge is to know the extent of one's ignorance.

Confucius

The value of an idea lies in the using of it.

Thomas Edison

Als ik iets goed zie, geef ik een compliment. Als ik iets fouts zie, bied ik hulp aan.

Nelson Mandela

Politiek is oorlog zonder bloedvergieten.

Mao Tse Toeng

Boredom is just the reverse side of fascination.

Arthur Schopenhauer

It is always safe to assume, not that the old way is wrong, but that there may be a better way.

Henry F Harrower

Will you look back on life and say, 'I wish I had,' or 'I’m glad I did'?

Zig Ziglar

In business as in life, you don’t get what you deserve, you get what you negotiate.

Chester L Karrass

There is no delight in owning anything unshared.

Seneca

Opportunities multiply as they are seized.

Sun Tzu

If you want to conquer fear, don't sit home and think about it. Go out and get busy.

Dale Carnegie

We are continually faced by great opportunities brilliantly disguised as insoluble problems.

Lee Iacocca

Knowing when to take your losses is an essential part of eventual success.

Tom Peters

The best example of leadership is leadership by example.

Jerry McClain

I had the blues because I had no shoes until upon the street, I met a man who had no feet.

Denis Waitley

If you have more than 3 priorities then you don't have any.

Jim Collins

If you don't have time to do it right, when will you have time to do it over?

John Wooden

Chase your passion, not your pension.

Denis Waitley

Toch jammer dat alles relatief is.

Gummbah

A wise man will make more opportunities than he finds.

Francis Bacon

The purpose of analysis is not modeling, but understanding.

Sun Tsu

Everything we hear is an opinion, not a fact. Everything we see is a perspective, not the truth.

Marcus Aurelius

Our aspirations are our possibilities.

Robert Browning

Only the mediocre are always at their best.

Jean Giraudoux

Being happy doesn't mean that everything is perfect. It means that you've decided to look beyond the imperfections.

Creativity is intelligence having fun.

Albert Einstein

You can tell whether a man is clever by his answers. You can tell whether a man is wise by his questions.

Naguib Mahfouz

There are only two ways to live your life: one is as though nothing is a miracle; one is as though everything is a miracle.

Albert Einstein

A man is but the product of his thoughts. What he thinks, he becomes.

Mahatma Gandhi

To raise new questions, new possibilities, to regard old problems from a new angle, requires creative imagination and marks real advance in science.

Albert Einstein

Individually, we are one drop. Together, we are an ocean.

Ryunosuke Satoro

Get the facts, or the facts will get you.

Thomas Fuller

If you hear a voice within you say "you cannot paint," then by all means paint,and that voice will be silenced.

Vincent Van Gogh

It is better to know some of the questions than all of the answers.

James Thurber

Destination is never a place but rather a new way of looking at things.

Henry Miller