Even a happy life cannot be without a measure of darkness, and the word happy would lose its meaning if it were not balanced by sadness.
Rational argument can be conducted with some prospect of success only so long as the emotionality of a given situation does not exceed a critical degree.
Mistakes are, after all, the foundations of truth, and if a man does not know what a thing is, it is at least an increase in knowledge if he knows what it is not.
Where love rules, there is no will to power and where power predominates, love is lacking. The one is the shadow of the other.