“I can only look from the outside (or cut into the inside, but flesh and genes do not reveal organic totality). I am stuck with a panoply of ineluctably indirect methods - some very sophisticated to be sure. I can atomize, experiment, and infer. I can record reams of data about behaviors and responses. But if I could be a beetle or a bacillus for that one precious minute - and live to tell the tale in perfect memory - then I might truly fulfill Darwin's dictum penned into an early notebook containing the first full flowering of his evolutionary ideas during the late 1830's: "He who understands the baboon would do more towards metaphysics than Locke."”
"Can We Truly Know Sloth and Rapacity?" pp. 376
Leonardo's Mountain of Clams and the Diet of Worms (1998)
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Stephen Jay Gould 274
American evolutionary biologist 1941–2002Related quotes

“I can tell a woman's age in half a minute — and I do!”
Princess Ida (1884)

Source: Striking Thoughts (2000), p. 22

Statement published in A Year of Beautiful Thoughts (1902) by Jeanie Ashley Bates Greenough, p. 172, Third statement for June 11. This has often been misattributed to Helen Keller in some published works since at least 1980, perhaps because she somewhere quoted it.
Variant:
I am only one,
But still I am one.
I cannot do everything,
But still I can do something;
And because I cannot do everything,
I will not refuse to do the something that I can do.
The Book of Good Cheer : A Little Bundle of Cheery Thoughts (1909) by Edwin Osgood Grover, p. 28; also in Masterpieces of Religious Verse (1948) by James Dalton Morrison, p. 416, where it is titled "Lend a Hand"

"Pouf Positive"
Untold Decades: Seven Comedies of Gay Romance (1988)

November 5, 2002 Times Newspaper http://www.timesonline.co.uk/article/0,,7-469593,00.html
2000s