About weak points [of the Origin] I agree. The eye to this day gives me a cold shudder, but when I think of the fine known gradations, my reason tells me I ought to conquer the cold shudder.
Charles Darwin, Frederick Burkhardt (1993). “The Correspondence of Charles Darwin:”, p.75, Cambridge University Press
![About weak points [of the Origin] I agree. The eye to this day gives me a cold shudder, but when I think of the fine known gradations, my reason tells me I ought to conquer the cold shudder.](http://cdn.quoteddaily.com/images/charles-darwin/about-weak-points-of-the-origin-i-agree-the-eye-to-this-day-gives-me-a-cold-shudder-but-when.jpg)