Carl Wilhelm Scheele

The pursuit of scientific truth is a noble and rewarding endeavor.

I have found that a certain acid, which I call 'muriatic acid,' is present in common salt.

My experiments are often challenging, but the rewards are immense.

I have discovered a new acid in olives, which I call 'oleic acid.'

The wonders of the natural world never cease to amaze me.

It is the greatest joy to me to discover new substances and to understand their properties.

The air consists of two elastic fluids, one of which supports combustion and respiration, while the other does not.

Phlogiston is not a simple substance, but a compound of several principles.

I have found a new acid, which I call lactic acid, from sour milk.

The green color of plants is due to a peculiar substance, which I have called chlorophyll.

Manganese is a metal, and its black oxide is a compound of this metal with oxygen.

I have discovered a new acid in fruits, which I call citric acid.

The decomposition of water by plants is a most remarkable phenomenon.

It is necessary to proceed with caution in chemical experiments, for many substances are dangerous.

The properties of substances are often hidden, and only careful experimentation can reveal them.

I have found a new acid in urine, which I call uric acid.

The air we breathe is not a simple substance, but a mixture of different gases.

The study of chemistry is a never-ending source of wonder and delight.

The heat produced by combustion is due to the combination of oxygen with the combustible substance.

The most important thing in chemistry is to observe carefully and to experiment diligently.