So, what are you up to, you frozen whale, you smoked, dried, canned piece of soul…? Why have you still not sent me your dissertation? Don’t you know that I am one of the 1.5 fellows who would read it with interest and pleasure, you wretched man? I promise you four papers in return. The first deals with radiation and the energy properties of light and is very revolutionary, as you will see if you send me your work first. The second paper is a determination of the true size of atoms…The third proves that bodies on the order of magnitude 1/1000 mm, suspended in liquids, must already produce an observable, random motion that is produced by thermal motion. Such movement of suspended bodies has actually been observed by physiologists, who call it Brownian motion. The fourth paper is only a rough draft at this point, and is an electrodynamics of moving bodies which employs a modification of the theory of space and time.
Albert Einstein, letter to Conrad Habicht, May 1905.
From: Isaacson, W. 2007. Einstein, His Life and Universe, p 93. Simon and Schuster.