Dmitri Mendeleev

On the Question of the Psychology of Scientific Creativity (1869)

Friedrich August Kekulé

Speech to the Festival at Berlin City Hall (1890)

James Clerk Maxwell

Molecular Evolution (1874)

Recollections of Dreamland (1856)

Michael Faraday

Observations on the Means of Obtaining Knowledge (1817)

Otto Loewi

The Idea of Chemical Transmission of Nervous Impulse (1960)