Study and Stimulants / Or, the Use of Intoxicants and Narcotics in Relation to Intellectual Life, as Illustrated by Personal Communications on the Subject, from Men of Letters and of Science

by Unknown

PROFESSOR ERNST HAECKEL, JENA.

I find strong coffee very useful in mental work. Of alcohol, I take very little, because I find it of no value as a stimulant. I have never smoked.

E. HAECKEL.
November 4, 1882.