Prof. Carl Sagan
@ProfCarlSagan
In the Memory of Astronomer, Researcher, Educator, Communicator, Advocate and Activist who taught us importance of understanding Science.
There are mainly two kinds of dangerous in our society, Carl Sagan nailed it long ago...
Be teachable. You don't know everything and you're not always right.
The more you learn, the more you realize how little you know.
We must be careful not to believe things simply because we want them to be true. No one can fool you as easily as you can fool yourself. - Richard Feynman
The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.
There must be no barriers to freedom of inquiry. There is no place for dogma in science.
Carl Sagan simplify why nothing can travel faster than light...
Education isn't something you can finish." - Isaac Asimov (1920-1992)

Once you give a charlatan power over you, you almost never get it back.
Look again at that dot. That's here. That's home. That's us. On it everyone you love, everyone you know, everyone you ever heard of, every human being who ever was, lived out their lives. The aggregate of our joy and suffering, thousands of confident religions, ideologies, and…

We must be careful not to believe things simply because we want them to be true. No one can fool you as easily as you can fool yourself. - Richard Feynman

The cure for a fallacious argument is a better argument, not the suppression of ideas.
You could never convince a monkey to give you a banana by promising him limitless bananas after death in monkey heaven.
40 Years ago Carl Sagan knew about Climate change and he was so aware of it's impact on Nature more than us we do right now.
Progress in science is often built on wrong theories that are later corrected. It is better to be wrong than to be vague.
If you want to live a happy life, tie it to a goal, not to people or things.