The Autobiography of Charles Darwin by Ed. Francis Darwin

One little event during this year has fixed itself very firmly in my mind, and I hope that it has done so from my conscience having been afterwards sorely troubled by it; it is curious as showing that apparently I was interested at this early age in the variability of plants!
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With respect to science, I continued collecting minerals with much zeal. I must have observed insects with some little care. I almost made up my mind to begin collecting all the insects which I could find dead, for on consulting my sister I concluded that it was not right to kill insects for the sake of making a collection.
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Life there was perfectly free; the country was very pleasant for walking or riding; and in the evening there was much very agreeable conversation, not so personal as it generally is in large family parties, together with music. Nothing has left a more vivid picture on my mind than these evenings at Maer.
— from this book
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Autobiography of Charles Robert Darwin, (12 February 1809 – 19 April 1882) was an English naturalist and geologist, best known for his contributions to evolutionary theory. He established that all species of life have descended over time from common ancestors.
This has been edited by his son Francis Darwin.