The elements which are the most widely diffused have small atomic weights
Russian chemist and inventor. He formulated the Periodic Law, created a farsighted version of the periodic table of elements, and used it to correct the properties of some already discovered elements and also to predict the properties of eight elements yet to be discovered.
Keep your face to the sun and you will never see the shadows
The unprepared mind cannot see the outstretched hand of opportunity
Its not the love you make. It's the love you give
Science knows no country because it is the light that illuminates the world
In every walk with Nature one receives far more than he seeks
We must use time creatively, in the knowledge that the time is always ripe to do right
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