I cannot teach anybody anything, I can only make them think- Socrates, Greek philosopher
Learning without thought is a labor lost- Confucius, Chinese philosopher, teacher, editor and politician
It pays to keep an open mind, but not as open so your brains fall out- Carl Sagan, American astronomer, cosmologist, astrophysicist, astrobiologist and author
Thinking is skilled work. It is not true that we are naturally endowed with the ability to think clearly and logically – without learning how, or without practicing- Alfred Mandler, author
The human mind once strecthed by a new idea never goes back to its original dimensions- Oliver Wendell Holmes, American physician, author, poet and professor
Discovery is seeing what everybody else has seen, and thinking what nobody else has thought- Unknown
My father used to say, “Don’t raise your voice; improve your argument”- Desmond Tutu, South African social rights activist
Children must be taught how to think, not what to think- Margaret Mead, American cultural anthropologist, author and speaker
It is better to debate a question without settling it than to settle a question without debating it- Joseph Jeobert, French moralist and essayist
Read not to contradict and confute; nor to believe and take for granted; nor to find talk and discourse; but to weight and consider- Francis Bacon, English essayist
Critical thinking is thinking about your thinking while you’re thinking in order to make your thinking better- Dr. Richard Paul, American author and lecturer