A gem is not polished without rubbing, nor is a man perfected without trials.

The exercise of power is determined by thousands ofinteractions between the world of the powerful and that of the powerless, allthe more so because these worlds are never divided by a sharp line: everyonehas a small part of himself in both.

The great despisers are the greater reverers.

It's notthe will to win, but the will to prepare to win that makes the difference.

A man has no ears for that to which experience has given no access.

One of the function of intelligence is to take account of the dangers that come from trusting solely to the intelligence.

Whenour knowing exceeds our sensing, we will no longer be deceived by theillusions of our senses.

Kind wordscan be short and easy to speak, but their echoes are truly endless.

Nature hasgiven men one tongue and two ears, that we may hear twice as much as wespeak.

Failingto plan is planning to fail.

There is much more learning than knowing in the world.

Adam and Eve had many advantages, but the principal one was tht they escaped teething.