True art and true science possess two unmistakable marks: the first, an inward mark, which is this, that the servitor of art and science will fulfil his vocation, not for profit but with self- sacrifice; and the second, an external sign, his productions will be intelligible to all the people whose welfare he has in view.

Those whom God wishes to destroy he drives mad.

So long as people do not consider all men as their brothers and do not consider human life as the most sacred thing, which rather than destroy they must consider it their first and foremost duty to support; that is so long as people do not behave towards one another in a religious manner, they will always ruin one another's lives for the sake of personal gain.

Everyone thinks of changing the world, but no one thinks of changing himself.

The happiness of men consists in life. And life is in labor.

He who has a mistaken idea of life, will always have a mistaken idea of death.

Music makes me forget myself, my true condition, it carries me off into another state of being, one that isn't my own.