^^Abbeverarsi alla fonte.

It is of great advantage to the student of any subject to read the original memoirs on that subject, for science is always most completely assimilated when it is in the nascent state.
— James Clerk Maxwell. A Treatise on Electricity and Magnetism (1873), Vol. 1, Preface, xiii-xiv.

 

A treatise on electricity and magnetism (Volume 1) - Maxwell, James Clerk, 1831-1879

 

dida: e' opportuno leggere la prefazione del trattato.