Dmitri Mendeleev

The structure of the elements is a matter of the internal structure of their atoms.

The properties of the elements are a periodic function of their atomic weights.

Without knowledge, without work, there is no hope for humanity.

My main interest is to help my country, Russia, develop its industrial capacity.

The spirit of scientific inquiry must be cultivated in all children.

One day, all elements will be discovered and their properties understood.

I was very much interested in spiritualism, but I found no scientific basis for it.

The whole essence of science is to make predictions.

I have been called a charlatan, a madman, and a dreamer, but I have always pursued the truth.

The periodic law is now so firmly established that no one can gainsay its fundamental truth.

The greatest good is the knowledge of the truth.

There will be new elements discovered, and they will fit into the empty spaces in my table.

The progress of science is a series of corrections.

I have always been convinced that the universe is governed by laws that are discoverable through observation and experiment.

It is easier to make a scientific discovery than to explain it to the common man.

I consider it my duty to be useful to my country.

The periodic law is one of the most important generalizations in chemistry.

To tell the truth, I never thought of myself as a genius; I just worked hard.

My table will serve as an instrument for discovering new facts and for correcting old ones.

The universe is a vast chemical laboratory.