A happy marriage is a long conversation which always seems too short.
He who wants to do everything will never do anything.
The first recipe for happiness is: avoid too lengthy meditation on the past.
Everything that is in agreement with our personal desires seems true; everything that is not puts us in a rage.
No one can be profoundly original who does not avoid eccentricity.
The effectiveness of work increases according to geometric progression if there are no interruptions.