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"Just as the only reservoir for the typhus virus in nature is provided by man, so the only vector of infection is the louse. The bite of the louse is not virulent immediately after the infecting meal. It becomes so only towards the 7th day following infection."
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"Here in this endless and gleaming wildernessI was removed farther than ever from the world of men --And I never saw so close and so clearlyThe image in the mirror of my own soul."
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Personal Development
"If you will stay close to nature, to its simplicity, to the small things hardly noticeable, those things can unexpectedly become great and immeasurable."
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Personal Development
"Flowers are the beautiful hairs of the Mother Spring! Don't pluck them!"
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Personal Development
"Men are by nature merely indifferent to one another; but women are by nature enemies."
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Personal Development
"Sometimes, humanity surprises me with all its lack of control over the primordial urges. These innate urges are the biological traits that make us similar to the rest of the animal kingdom. But the modern qualities that make us superior to all the animals are intellect and self-control."
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Personal Development
"Retaliation is related to nature and instinct, not to law. Law, by definition, cannot obey the same rules as nature."
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Personal Development
"The Moon always finds an opportunity to turn our attention from the ground beneath our feet to the sky above our head!"
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Personal Development
"Everything in Nature contains all the powers of Nature. Everything is made of one hidden stuff."
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Personal Development
"Sand by the seashore is inestimable."
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Personal Development
"It is spring, let us dance and dream with flowers. Let us sing and enjoy the trees."
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Personal Development
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"Just as the only reservoir for the typhus virus in nature is provided by man, so the only vector of infection is the louse. The bite of the louse is not virulent immediately after the infecting meal. It becomes so only towards the 7th day following infection."
Nature
"At the time when I was conducting my research there was no known method for taking the guinea pig's temperature. I demonstrated a technique which is now widely used."
Time
"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
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