Good humor isn't a trait of character, it is an art which requires practice.
Try out your ideas by visualizing them in action.
We learn courageous action by going forward whenever fear urges us back.
Intellectual comradeship requires that you think your thoughts through to the place where you can make the complex seem simple, the obscure quite clear.
The key to most difficulties does not lie in the dilemmas themselves, but in our relationship to them.
Those who fume at their problems become their victims.