The Oxford Book of Modern Science Writing edited by Richard Dawkins

Dawkins samples ~50 well-known science/math authors.

These monsters (Giant Pope and Giant Pagan from Pilgrim's Progress) were not only ten times as hight as Christian, but ten times as wide and ten times as thinck, so that their total weight was a thousand times his, or about eighty to ninety tons. Unfortunately the cross-sections of their bones were only a hundred times those of Christian, so that every square inch of ginant bone had to support ten times the weight borne by a square inch of human bone. As the human thigh-bone breaks under about ten times the human weight, Pope and Pagan would have broken their thighs every time they took a step...
You can drop a mouse down a thousand-yard mine shaft; and, on arriving at the bottom, it gets a slight shock and walks away. A rat is killed, a man is broken, a horse splashes...
On Being the Right Size, J B S Haldane
Just as compulsory primary education created a market catered for by cheap dailies and weeklies, so the spread of secondary and latterly tertiary education has created a large population of people, often with well-developed literary and scholarly tastes, who have been educated far beyond their capacity to undertake analytical thought.
The Phenomenon of Man, Peter Medawar
We will always be mired in error. The most each generation can hope for is to reduce the error bars a little, and to add to the body of data to which error bars apply. The error bar is a pervasive, visible self-assessment of the reliability of our knowledge...
Imagine a society in which every speech in the Congressional Record, every television commercial, every sermon had an accompanying error bar or its equivalent.
The Demon-Haunted World, Carl Sagan
For example, Cantor showed that, given any infinite cardinal, there is a larger one. There are infinitely many different infinities. But now consider the cardinal of the set of all cardinals. This must be larger than any cardinal whatsoever, including itself! This problem was eventually resolved by restricting the concept of 'set', but I wouldn't say people are totally happy about that answer even today.
Cantor's Paradise, Ian Stewart
Look again at that dot. That's here. That's hoome. That's us. On it everyone you love, everyone you know, everyone you ever heard of, every human being who ever was, lived out their lives. The aggregate of our joy and suffereing, thousands of confident religtions, ideologies, and economic doctrines, every hunter and forager, every hero and coward, every creator and destroyer of civilization, every king and peasant, every young couple in love, every mother and father, hopeful child, inventor and explorer, every teacher of morals, every corrupt politician, every 'superstar', every 'supreme leader', every saint and sinner in the history of our species lived there -- on a mote of dust suspended in a sunbeam.
The Earth is a very small stage in a vast cosmic arena. Think of the rivers of blood spilled by all those generals and emperors so that, in glory and triumph, they could become the momentary masters of a fraction of dot. Think of the endless cruelties visited by the inhabitants of one corner of this pixel on the scarcely distinguishable inhabitants of some other corner, how frequent their misunderstandings, how eager they are to kill one another, how fervent their hatreds.
Pale Blue Dot, Carl Sagan
umm... that's life... ;)