I finally demonstrated that typhus infection is not hereditary in the louse.

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.

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.

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.

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.

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.

I finally demonstrated that typhus infection is not hereditary in the louse.

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.

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.

Most of the doctors in the Tunisian administration, especially those in country districts, contracted typhus and approximately one third of them died of it.

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.

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.

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.

It did not seem likely that I was destined to undertake research on typhus.

The good thing about having chemistry is, when you get to the improv section of a scene, you've got somebody to feed off. It can go on and on and on, and the sky's the limit.

Old friends pass away, new friends appear. It is just like the days. An old day passes, a new day arrives. The important thing is to make it meaningful: a meaningful friend - or a meaningful day.

Why has Scandinavia been producing such good thrillers? Maybe because their filmmakers can't afford millions for CGI and must rely on cheaper elements like, you know, stories and characters.

When you run the marathon, you run against the distance, not against the other runners and not against the time.

We shall perish by guile just as we slew.

I like 'Sponge Bob' and 'The Last Airbender.' I like shows where people get creative to do the impossible.

Loneliness teaches and shows you the real and unreal and such things that one can never understand and even imagine living with others.

I do most of my work on the stage, and typically once the show is over, it's over.

In fact, there's a lot to legitimately hate about pro sports and the way they are conducted.

Life is an ordeal, albeit an exciting one, but I wouldn't trade it for the good old days of poverty and obscurity.

No child should be left behind - I've heard this from President Obama. And here, we say in Latin America, no country should be left behind.

When you create advertising, always start with the words.

I have always abhorred the word 'racism.' I never use it.

You see rock and roll isnt a career or hobby its a life force. Its something very essential.

Life is full of surprises.

I have no sense of myself as a sex symbol at all. But the meaning of sex symbol might be a little different in Japan to elsewhere. The Japanese version seems to come with a stronger emphasis on a sort of grownup or mature male charm. And if that's the case, then I guess I'm happy to hear it.

I'm a traditionalist. I have certain values I live by.

If Roosevelt were alive today, he'd turn over in his grave.

Failing to be there when a man wants her is a woman's greatest sin, except to be there when he doesn't want her.

None can love freedom heartily, but good men; the rest love not freedom, but licence.

I'm not a good enough singer to pull off the effect.

Stripping away artifice - it's the constant standard I aim for in acting, to approximate life. People talk about being bigger than life - but there's nothing bigger than life.

A friend of mine told me a bunch of stuff on Buddhism and about Avicii being the lowest level of Buddhist hell, and it just sort of got stuck in my head. Later on when I went to setup a MySpace, I tried a bunch of names and they were all taken so I just kind of ended up with Avicii and then I got really attached to it.

There's a need to keep the history of an artform going, parallel with the new work that's being done.