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Dmitri Mendeleev Biography

Born on February 8 , 1834, to Ivan Pavlovich and Maria Dmitrievna Mendeleev, in Tobolsk in Serbia, Dmitri Mendeleev was one of fourteen children in the family. His father was not only extremely poor but also blind which forced his mother to take on the entire burden of the family on her rather frail shoulders. To make ends meet, she began a glass factory which unfortunately was razed to the ground.
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Dmitri Mendeleev Quotes

I have no need of proof. The laws of nature, unlike the laws of grammar, admit of no exception. I suppose when my unknown elements are found, more people will pay us attention. I wish to establish some sort of system not guided by chance but by some sort of definite and exact principle. If all the elements are arranged in the order of their atomic weights, a periodic repetition of properties is obtained. This is expressed by the law of periodicity. In science we must all submit not to what seems to us attractive from one point of view or another, but to what represents an agreement between theory and experiment. The edifice of science not only requires material, but also a plan. Without the material, the plan alone is but a castle in the air—a mere possibility; whilst the material without a plan is but useless matter. We should still expect to discover many unknown simple bodies; for example, those similar to aluminum and silicon, elements with atomic weights of 65 to 75. When the elem