One succeeds in obtaining an equivalent production at a lower price by improving the arts, trades and agriculture and by developing the physical and moral qualities of workers, farmers and craftsmen.

Nothing is lost, nothing is created, everything is transformed

I consider nature a vast chemical laboratory in which all kinds of composition and decompositions are formed.

Languages are true analytical methods.

Nothing is born, nothing dies.

Sulfur, when burning, absorbs oxygen gas; the resulting acid is considerably heavier than the sulfur burned; its weight is equal to the sum of weights of the sulfur burned and the oxygen absorbed.

Vegetation is the basic instrument the creator uses to set all of nature in motion.

It is impossible to disassociate language from science...To call forth a concept, a word is needed.

In performing experiments, it is necessary... that they be simplified as much as possible, and that every circumstance that could complicate the results should be completely removed.

It required 85 parts by weight of oxygen and 15 parts of hydrogen to compose 100 parts of water.

I am young and avid for glory.

Well I'd certainly hate to interrupt your pleasant night stroll with my sudden death.

There are two rules for achieving anything. Rule No. 1: Get started. Rule No. 2: Keep going.

I have profound respect for Sacha Baron Cohen, but Borat is not a particularly comfortable movie for me to sit through.

The best part of the character and quality of the leader is expressing who you are in the work you do and how you do it.

Of course, you'll have to meet the physical and psychological demands. A space walk takes a lot of energy.

Never learn to do anything: if you don't learn, you'll always find someone else to do it for you.

I think the University of Texas has the chance to become the finest public university in the country.

I think protest and actions have to be organised against the Israelis and their backers. There needs to be a concerted high profile campaign to raise awareness of the people in this country.

As a woman I have no country. As a woman my country is the whole world.