The greatest lesson is not to build cities where major tsunamis sometimes occur.

Perhaps her greatest lesson was to never take "No" for an answer.

Some of the greatest lessons to be learnt have been in human terms.

Our greatest lessons from 9/11 were lost on revenge.

The greatest lesson I learned was that sometimes you have to fake it.

The greatest lesson, however, is the true value of love.

But those who survived learned the greatest lesson of their lives.

But the last and greatest lesson of reason is to understand that there are things beyond its reach.

"Football taught me some of the greatest lessons about submitting to authority," White said.

And he learns the greatest lesson of all: "despite life's challenges, great things are possible if one never gets discouraged".