“It's usually the roughest waters that teach us the most.”
“Isn't it the unexpected that teaches us the most?”
“It's the questions we can't answer that teach us the most. They teach us how to think. If you give a man an answer, all he gains is a little fact. But give him a question and he'll look for his own answers.”
“The people who matter the most to us in the end, who teach us the most, are the people who make their worst mistakes with us.”
“The roughest roads often lead to the top.”
“Mostly it is loss which teaches us about the worth of things.”