Experience, if we only learn by it, is cheap at any price.
As the sea is beautiful not only in calm but also in storm, so is happiness found not only in peace but also in strife.
It needs as much generosity to take as to give.
What we know is to what we do not know, as a grain of sand is to the beach.
Though my sight be lost, I do not yet lose my faith: when I can no longer see, I can still believe.
Of the future, man knows least; yet, about this, he worries most.