"Without any doubt whatsoever, this was the proudest moment I had known." (Chapter 1, Beginnings, 2)

"It was at this moment that I realized the chimps were eating meat." (Chapter 3, First Observations, 34)

"... it was obvious that he was actually using a grass stem as a tool." (Chapter 3, First Observations, 35)

"I should have been even more amazed had I known then that I would only see such a display twice more in the next ten years." (Chapter 5, The Rains, 54)

"And it seemed quite unbelievable when at about ten o'clock David Graybeard strolled calmly past the front of my tent and climbed the palm tree." (Chapter 6, The Chimps Come to Camp, 65)

"Soon Flo moved up into the bushes and there was mated by every male in turn." (Chapter 7, Flo's Sex Life, 84)

"For Hugo and me the privilege of being able to watch Flint's progress that year remains one of the most delightful...