Dogma does not mean the absence of thought, but the end of thought.

-Gilbert Chesterton

 

It is impossible to enjoy idling thoroughly unless one has plenty of work to do. There is no fun in doing nothing when you have nothing to do. Wasting time is merely an occupation then, and a most exhausting one. Idleness, like kisses, to be sweet must be stolen.

-Jerome K. Jerome

 

Most of one's life is one prolonged effort to prevent oneself thinking.

-Aldous Huxley

 

Courage is rightly esteemed the first of human qualities because it is the quality which guarantees all others.

-Sir Winston Churchill

 

Tact in audacity consists in knowing how far we may go too far.

-Jean Cocteau

 

Nothing in life is to be feared. It is only to be understood.

-Marie Curie

 

The most important scientific revolutions all include, as their only common feature, the dethronement of human arrogance from one pedestal after another of previous convictions about our centrality in the cosmos.

-Stephen Jay Gould

 

The old believe everything; the middle-aged suspect everything; the young know everything.

-Oscar Wilde

 

It is better to fail in originality than to succeed in imitation.

-Herman Melville

 

It is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring.

-Carl Sagan

 

If knowledge can create problems, it is not through ignorance that we can solve them.

-Isaac Asimov

 

Do not think of knocking out another person's brains because he differs in opinion from you. It would be as rational to knock yourself on the head because you differ from yourself ten years ago.

-Horace Mann

 

A long habit of not thinking a thing wrong, gives it a superficial appearance of being right.

-Thomas Paine

 

If you are able to state a problem, it can be solved.

-Edwin H. Land

 

Sit down before fact as a little child, be prepared to give up every preconceived notion, follow humbly wherever and to whatever abysses nature leads, or you shall learn nothing.

-Thomas Henry Huxley

 

All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident.

-Arthur Schopenhauer

 

Do first things first, and second things not at all.

-Peter Drucker

 

Each problem that I solved became a rule which served afterwards to solve other problems.

-Rene Descartes

 

The dread of censure is the death of genius.

-William Gillmore Simms

 

In the beginner's mind there are many possibilities. In the expert's mind there are few.

-Shunryu Suzuki

 

The aspects of things that are most important to us are hidden because of their simplicity and familiarity

-Ludwig Wittgenstein

 

The three great essentials to achieve anything worth while are, first, hard work; second, stick-to-itiveness; third, common sense.

-Thomas Edison

 

History is a vast early warning system.

-Norman Cousins

 

A man who is master of patience is master of everything else.

-George Savile

 

A man may dwell so long upon a thought that it may take him prisoner.

-George Savile

 

Nothing would more contribute to make a man wise than to have always an enemy in his view.

-George Savile

 

Serious-minded people have few ideas. People with ideas are never serious.

-Paul Valery