Dmitri Mendeleev — "What has been sown for the field of science will grow up for the people's welfar…"

"It is the duty of the chemist to teach the world how to use the elements wisely."

"It is the function of science to discover the existence of a general reign of order in nature and to find the causes governing this order. And this refers in equal measure to the relations of man - so…"

"I saw in a dream a table where all the elements fell into place as required. Awakening, I immediately wrote it down on a piece of paper, only in one place did a correction later seem necessary."

"The chemical elements are the children of the sun."

"The capital fact to note is that petroleum was born in the depths of the earth, and it is only there that we must seek its origin."