"There is presumably an upper limit to the carrying capacity of humans on earth—of the numbers that agriculture …"

"At the core of punctuated equilibria lies an empirical observation: once evolved, species tend to remain remarkably s…"

"Although Haldane accepted the earlier and incorrect paleontological interpretation of the fossil record of Gryphaea, …"

"According to Gould and Eldredge, the reason why so many links are missing is that they simply do not exist. They take…"

"For him delicious flavors dwell In books as in old Muscatel."

"And in the evening, everywhere Along the roadside, up and down, I see the golden torches flare Like lighted street-la…"

"Song like a rose should be; Each rhyme a petal sweet; For fragrance, melody, That when her lips repeat The words, her…"

"In the ancient land of vintage and dance and sun-burnt mirth, there resounded during the Middle Ages a sweet chorus o…"

"The poetry of the troubadours was essentially social in character. Unlike Goethe's minstrel, who sang as the bird amo…"

"In the eleventh century the nobility, which had previously been terribly rough and barbarous, began to grow more refi…"