One day, on looking at an orchid, I was struck with the idea that the structure of the flower was adapted to the visits of insects.
Theory of evolution
From his autobiography, describing an 'aha!' moment.
c. 1860s
Found in 1 providers: grok
Cross Reference
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"No one can feel more strongly than I do the extreme difficulty of accounting for the origin of species."
Humorous"The love of experiment and the patient observation of nature are the two great qualifications for a naturalist."
Humorous"We are not to be discouraged by the smallness of the means, but to remember that the greatest results are often produced by the accumulation of small effects."
Humorous"It is a cursed evil to any man to become so absorbed in any one subject as I am in mine."
Strange & Unusual"The very existence of our senses, our reason, and our intellect, is a proof that these faculties were given us for some purpose."
Humorous