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"The discovery that I soon made that the guinea pig was also susceptible to infection made it possible for me, from the third year on, to preserve the virus on this animal."
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"Discover the diamonds in everyday life."
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Personal Development
"Real science begins with curiosity and madness."
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Personal Development
"Remember that often we will not know the small details of our life mission."
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Personal Development
"Don't be too engrossed with things of the world discover your purpose in life."
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Personal Development
"Humboldt's early biographer, F.A. Schwarzenberg, subtitled his life of Humboldt What May Be Accomplished in a Lifetime. He summarised the areas of his subject's extraordinary curiosity as follows: '1) The knowledge of the Earth and its inhabitants. 2) The discovery of the higher laws of nature, which govern the universe, men, animals, plants, minerals. 3) The discovery of new forms of life. 4) The discovery of territories hitherto but imperfectly known, and their various productions. 5)The acquaintance with new species of the human race--- their manners, their language and the historical traces of their culture.' What may be accomplished in a lifetime---and seldom or never is."
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Personal Development
"You can't hide from wisdom, it's everywhere; you won't find it in everyone, it's too rare."
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Personal Development
"No matter how deeply you come to know a place, you can keep coming back to know it more."
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Personal Development
"To know your purpose, you have to find yourself."
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Personal Development
"We all seek for lost things within us."
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Personal Development
"Your discovery determines what you are known for."
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"Most of the doctors in the Tunisian administration, especially those in country districts, contracted typhus and approximately one third of them died of it."
Country
"I demonstrated the characteristics of experimental fever. It appears after an incubation period which is never less than five days. It follows the same pattern as natural fever in man, but is of shorter duration and less pronounced."
Man
"The discovery that I soon made that the guinea pig was also susceptible to infection made it possible for me, from the third year on, to preserve the virus on this animal."
Discovery
"It did not seem likely that I was destined to undertake research on typhus."
Research
"My first attempts to transmit typhus to laboratory animals, including the smaller species of monkeys, had failed, as had those of my predecessors, for reasons which I can easily supply today."
Animals
"I was less successful in my attempts to effect preventive vaccination against typhus by using the virus and in trying to produce large quantities of serum using large animals."
Success
"Even if it had not been possible to reproduce the disease in animals and consequently to verify the hypothesis, this simple observation would have been sufficient to demonstrate the way in which the disease was propagated."
Animals
"The fact that I was fortunate enough to escape contagion, in spite of frequent, sometimes daily contacts with the disease, was because I soon guessed how it spread."
Disease
"From the practical point of view, the susceptibility to infection of the guinea pig proved to be the most useful step forward. Today, all laboratories use this animal for preserving the virus."
Today
"Of all the problems which were open to me for study, typhus was the most urgent and the most unexplored. We knew nothing of the way in which contagion spread."
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