Quotes from Carl Sagan

National boundaries are as invisible as meridians of longitude, or the Tropics of Cancer and Capricorn. The boundaries are arbitrary. The planet is real.

We are haltingly, tentatively breaking the shackles of the earth ... but our energies are directed far more toward war. Hypnotized by mutual mistrust, almost never concerned for the species or the planet, the nations prepare for death. And because what we are doing is so horrifying, we tend not to think of it much. But what we do not consider we are unlikely to put right.

We are made of stellar ash.

Are the worlds of more advanced civilizations totally geometrized, entirely rebuilt by their inhabitants? Or would the signature of really advanced civilization be that they left no sign at all?

Minha alegria de ensinar foi repetidamente frustrada por diretores com características militares.

We are, each of us, a multitude.

ELLIE IGNORED random access and advanced sequentially through the television stations. Lifestyles of the Mass Murderers and You Bet Your Ass were on adjacent channels. It was clear at a glance that the promise of the medium remained unfulfilled.

Perhaps the depth of love can be calibrated by the number of different selves that are actively involved in a given relationship. With

And because what we are doing is so horrifying, we tend not to think of it much.

La guerra atómica es la negación de las virtudes del militar: nada tiene de valeroso apretar un botón letal.

Other things being equal, it is better to be smart than to be stupid.

The world is so exquisite, with so much love and moral depth, that there is no reason to deceive ourselves with pretty stories for which there's little good evidence.

And just when she felt more capable of love than she had ever been, she found herself alone.

You'd be surprised how rarely something like that happens. In the long run, the aggressive civilizations destroy themselves, almost always. It's their nature. They can't help it. In such a case, our job would be to leave them alone. To make sure that no one bothers them. To let them work out their destiny.

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It is a little unfair, I think, to criticize a person for not sharing the enlightenment of a later epoch, but it is also profoundly saddening that such prejudices were so extremely pervasive.

It is therefore impossible that reason not previously instructed should imagine anything other than that the Earth is a kind of vast house with the vault of the sky placed on top of it;

What worries me the most," she continued, "is the opposite, the possibility that they're not trying. They could communicate with us, all right, but they're not doing it because they don't see any point to it. It's like . . ."—she glanced down at the edge of the tablecloth they had spread over the grass—"like the ants. They

That's why they're placed in UFO magazines—because by and large the very act of buying such a magazine so categorizes the reader.

This is all a big ball . . . turning in the middle of the sky . . . once a day. She tried to imagine it spinning, with millions of people glued to it, talking different languages, wearing funny clothes, all stuck to the same ball.

Kozmos ''düzen içinde bir evren'' anlam?nda kullan?lan Yunanca bir sözcüktür ve bir bak?ma ''karmaÅŸa'' anlam?na gelen Kaos'un kar??t?d?r.

If it's sometimes easier to reject strong evidence than to admit that we've been wrong, this is also information about ourselves worth having.

Una científica compañera mía me contaba un reciente viaje que realizó a la meseta de Nueva Guinea, donde visitó una tribu todavía en la edad de piedra que apenas había tenido contactos con la civilización. Ignoraban lo que son los relojes de pulsera, las bebidas refrescantes y los alimentos congelados. Pero conocían el Apolo 11. Sabían que los humanos han pisado la Luna.

Curiosity and the urge to solve problems are the emotional hallmarks of our species