Charles Darwin an Ernst Haeckel, Down, 9. März 1864
DOWN. | BROMLEY. | KENT. S. E. | Mar 9. 1864
Dear & Respected Sir
You must permit me to thank you sincerely for the present of your paper & for the Stettin Newspaper. I am delighted that so distinguished a Naturalist should confirm & expound my views, || and I can clearly see that you are one of the few who clearly understand Natural Selection.
I feel sure that you do good service by boldly expressing how far you agree with me.
Many men in this country & elsewhere really go nearly or quite as far as I do on the modification of || Species, but are afraid openly to express such views. I have been particularly struck & interested by your remarks on the individual variability of Sapphirina. This sentence will be remembered by me & quoted hereafter.
With sincere respect
I remain dear Sir
yours very faithfully