Acquaintances are always abundant; friends are always scarce!

Thanks to the night, we long for the day; thanks to the day, we long for the night! The purpose of the opposites is to make us long for something! Thanks to the crowds, we long for the solitude; thanks to the solitude, we long for the crowds!

The purpose of life is to pass the frontiers! Attack the frontiers to go beyond them with the determination of a bull attacking the red colour!

Don't be like a train; don't travel on the same path! Thousands of different paths are waiting for you to walk! Don't be like a train!

Blessed are the ones who have enemies, for they have a vital reason to be better in every way.

Window washers increase the vision in the windows of the buildings; wisdom quotes do the same thing in the eyes of the people!

Every single moment, an ignorant discovers an idea that has been known for centuries!