If a marker were to be erected today, it might read, in homage to his scientific courage: “He preferred the hard truth to his dearest illusions.” - Carl Sagan

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If a marker were to be erected today, it might read, in homage to his scientific courage: “He preferred the hard truth to his dearest illusions.”

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About Carl Sagan

Carl Edward Sagan (9 November 1934 – 20 December 1996) was an American astronomer, planetary scientist, cosmologist, astrophysicist, astrobiologist, author, and science communicator. His best known scientific contribution is research on extraterrestrial life, including experimental demonstration of the production of amino acids from basic chemicals by radiation. Sagan assembled the first physical messages sent into space, the Pioneer plaque and the Voyager Golden Record, universal messages that could potentially be understood by any extraterrestrial intelligence that might find them. Sagan argued the hypothesis, accepted since, that the high surface temperatures of Venus can be attributed to, and calculated using, the greenhouse effect. He testified to the US Congress in 1985 that the greenhouse effect will change the earth's climate system.

Biography information from Wikiquote

Also Known As

Native Name: Carl Edward Sagan
Alternative Names: Sagan Carl E. Sagan Carl E Sagan C. E. Sagan C.E. Sagan C E Sagan C. Sagan C Sagan Sagan C Sagan C. Sagan C. E. Sagan CE
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Additional quotes by Carl Sagan

I have a foreboding of an America in my children’s or grandchildren’s time — when the United States is a service and information economy; when nearly all the key manufacturing industries have slipped away to other countries; when awesome technological powers are in the hands of a very few, and no one representing the public interest can even grasp the issues; when the people have lost the ability to set their own agendas or knowledgeably question those in authority; when, clutching our crystals and nervously consulting our horoscopes, our critical faculties in decline, unable to distinguish between what feels good and what’s true, we slide, almost without noticing, back into superstition and darkness.

Perhaps one per cent of the time, someone who has an idea that smells, feels and looks indistinguishable from the usual run of pseudoscience will turn out to be right. Maybe some undiscovered reptile left over from the Cretaceous period will indeed be found in Loch Ness or the Congo Republic; or we will find artefacts of an advanced, non-human species elsewhere in the solar system. At the time of writing there are three claims in the ESP field which, in my opinion, deserve serious study: (1) that by thought alone humans can (barely) affect random number generators in computers; (2) that people under mild sensory deprivation can receive thoughts or images 'projected' at them; and (3) that young children sometimes report the details of a previous life, which upon checking turn out to be accurate and which they could not have known about in any other way than reincarnation. I pick these claims not because I think they're likely to be valid (I don't), but as examples of contentions that might be true. The last three have at least some, although still dubious, experimental support. Of course, I could be wrong.

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Deniz kasvetli ve loş bir ortamdır. Karadaki memelilerin işine yarayan görme ve koku duyulan okyanusun derinliklerinde fazla yararlı değildir. Çiftleşecek birini ya da çocuğunu veya avını bulmak için bu duyulan kullanmaya yeltenen balinaların ataları nesillerini fazla sürdürememişlerdir. Böylece evrim yoluyla yeni bir yöntem geliştirmişlerdir; bu yöntem çok işe yarıyor ve balinaların anlaşabilmelerinde önemli rol oynuyor: İşitme duyusu. Balinaların çıkardıkları bazı sesler şarkı olarak niteleniyor. Fakat bu seslerin anlamı konusunda henüz cahil sayılırız. Yüksek frekanstan tutun da insan kulağının işitebileceği alçak frekansa kadar varan sesler çıkarıyorlar. Balinaların tipik bir şarkısı on beş dakika sürer. En uzunu da bir saati bulur. Bazen bu şarkının her haliyle aynen tekrarlandığı olur. Bazen de şarkının ortasında, bir grup balinanın kış sularını terkedip gittikleri ve altı ay sonra dönüp orada şarkıya aynı notadan tekrar başladıkları sanki hiç ara verilmemiş gibi saptanmıştır. Balinaların belleği çok kuvvetli. Çoğu zaman da şarkı listelerini değiştirdikleri görülür. — — -

Ne denli kocaman olmalı gökyüzündeki o küreler ...Ve iktidar oyunlarımıza gemi seferlerimize ve tüm savaşlarımıza sahne olan şu yerküremiz de ne denli küçük olmalı onlarla kıyaslanınca. Şu küçücük yerkürenin zavallı bir köşesinin efendileri olma uğruna bunca insanın hayatına kıyan krallarla prensler için gözönünde tutulması gereken, üzerinde düşünülmesi şart olan bir nokta bu.

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