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Carl Sagan

"The significance of our lives and our fragile planet is then determined only by our own wisdom and courage. We are the custodians of life's meaning. We long for a Parent to care for us, to forgive us our errors, to save us from our childish mistakes. But knowledge is preferable to ignorance. Better by far to embrace the hard truth than a reassuring fable. If we crave some cosmic purpose, then let us find ourselves a worthy goal."

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"The significance of our lives and our fragile planet is then determined only by our own wisdom and courage. We are the custodians of life's meaning. We long for a Parent to care for us, to forgive us our errors, to save us from our childish mistakes. But knowledge is preferable to ignorance. Better by far to embrace the hard truth than a reassuring fable. If we crave some cosmic purpose, then let us find ourselves a worthy goal."

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Donna Grant

"Knowledge, ideas, and wisdom are the most powerful forces that we can use to improve lives while bringing peace to this beautiful world."

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Personal Development

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Donna Grant

"As light nourishes plants, wisdom nourishes sages."

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Personal Development

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Donna Grant

"Beautiful silence is better than ugly speech."

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Personal Development

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Donna Grant

"Unless you know where you are going then you will not know how to get there."

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Personal Development

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Donna Grant

"You either waste, spend or invest time. Make your choice wisely."

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Personal Development

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Donna Grant

"Knowledge is your treasure. How well you spend and invest it will define your wisdom."

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Personal Development

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Donna Grant

"Knowledge makes you powerful and proud wisdom makes you simple and humble."

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Personal Development

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Donna Grant

"If you were brought up on a poor man's brand of drink and prefer that to this very day then do not pretend you like expensive wine."

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Personal Development

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Donna Grant

"The beginning of wisdom is understanding that life is full of ongoing learning experiences."

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Personal Development

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Donna Grant

"The post on her left was occupied by Mr. Erskine of Treadley, an old gentleman of considerable charm and culture, who had fallen, however, into bad habits of silence, having, as he explained once to Lady Agatha, said everything that he had to say before he was thirty."

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Personal Development

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Carl Sagan
"An atheist is someone who is certain that God does not exist, someone who has compelling evidence against the existence of God. I know of no such compelling evidence. Because God can be relegated to remote times and places and to uptime causes, we would have to know a great deal more about the Universe than we do now to be sure that no such God exists. To be certain of the existence of God and you be certain of the nonexistence of God seem to me to be the confident extremes in a subject so riddled with doubt and uncertainty as to inspire very little confidence indeed."

Philosophy

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Carl Sagan
"We are all flawed and creatures of our times. Is it fair to judge us by the unknown standards of the future?"

Ethics

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Carl Sagan
"And despite the insignificance of the instant we have so far occupied in cosmic time, it is clear that what happens on and near Earth at the beginning of the second cosmic year will depend very much on the scientific wisdom and the distinctly human sensitivity of mankind."

Responsibility

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Carl Sagan
"[In] everyday life, it is very rare that we are confronted with new facts about events of long ago. Our memories are almost never challenged. They can, instead, be frozen in place, no matter how flawed they are, or become a work in continual artistic revision."

Memory

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Carl Sagan
"Neuroanatomy, political history, and introspection all offer evidence that human beings are quite capable of resisting the urge to surrender to every impulse of reptilian core of brain."

Science

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Carl Sagan
"You squeeze the eyedropper, and a drop of pond water drips out onto the microscope stage. You look at the projected image. The drop is full of life - strange beings swimming, crawling, tumbling; high dramas of pursuit and escape, triumph and tragedy. This is a world populated by beings far more exotic than in any science fiction movie..."

Science

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Carl Sagan
"A typical chromosomal DNA molecule in a human being is composed of about five billion pairs of nucleotides. But since there are four different kinds of nucleotides, the number of bits of information in DNA is four times the number of nucleotide pairs. Thus if a single chromosome has five billion (5 X 10^9) nucleotides, it contains twenty billion (2 X 10^10) bits of information. We also see that if more than some tens of billions (several times 10^10) of bits of information are necessary for human survival, extragenetic systems will have to provide them: the rate of development of genetic systems is so slow that no source of such additional biological information can be sought in the DNA."

Science

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Carl Sagan
"We have also arranged things so that almost no one understands science and technology. This is a prescription for disaster. We might get away with it for a while, but sooner or later this combustible mixture of ignorance and power is going to blow up in our faces."

Power

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Carl Sagan
"Skeptical scrutiny is the means, in both science and religion, by which deep thoughts can be winnowed from deep nonsense."

Science

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Carl Sagan
"Personally, I would be delighted if there were a life after death, especially if it permitted me to continue to learn about this world and others, if it gave me a chance to discover how history turns out."

History

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