91.   Human beings learn by making mistakes, sometimes even male human beings.

92.   I watched my mother cook, learning by observation.

93.   I was trying to learn by listening to the Gospels, sermons and prayers.

94.   If dogs learned by watching each other, they would all perform in one fashion.

95.   If Americans ever expected an easy relationship with the new South Africa, they have by now learned otherwise.

96.   If by some miracle the two Koreas could learn to live in harmony with each other, the North would presumably no longer need its equalizer.

97.   If he had been born in Germany, he explains, he would have started out as an apprentice, but here he simply learned by doing.

98.   In each case, the dog learns by trial and error to anticipate which actions cause pleasant consequences and which ones bring discomfort.

99.   In the quest for green theology, Christians and Jews have much to learn by listening to those who understand the spirituality of the environment.