“There are two fundamentally different ways for the strong to bend down to the weak, for the rich to help the poor, for the more perfect life to help the “less perfect.” This action can be motivated by a powerful feeling of security, strength, and inner salvation, of the invincible fullness of one’s own life and existence. All this unites into the clear awareness that one is rich enough to share one’s being and possessions. Love, sacrifice, help, the descent to the small and the weak, here spring from a spontaneous overflow of force, accompanied by bliss and deep inner calm. Compared to this natural readiness for love and sacrifice, all specific “egoism,” the concern for oneself and one’s interest, and even the instinct of “self-preservation” are signs of a blocked and weakened life. Life is essentially expansion, development, growth in plenitude, and not “self-preservation,” as a false doctrine has it. Development, expansion, and growth are not epiphenomena of mere preservative forces and cannot be reduced to the preservation of the “better adapted.” … There is a form of sacrifice which is a free renunciation of one’s own vital abundance, a beautiful and natural overflow of one’s forces. Every living being has a natural instinct of sympathy for other living beings, which increases with their proximity and similarity to himself. Thus we sacrifice ourselves for beings with whom we feel united and solidary, in contrast to everything “dead.” This sacrificial impulse is by no means a later acquisition of life, derived from originally egoistic urges. It is an original component of life and precedes all those particular “aims” and “goals” which calculation, intelligence, and reflection impose upon it later. We have an urge to sacrifice before we ever know why, for what, and for whom! Jesus’ view of nature and life, which sometimes shines through his speeches and parables in fragments and hidden allusions, shows quite clearly that he understood this fact. When he tells us not to worry about eating and drinking, it is not because he is indifferent to life and its preservation, but because he sees also a vital weakness in all “worrying” about the next day, in all concentration on one’s own physical well-being. … all voluntary concentration on one’s own bodily wellbeing, all worry and anxiety, hampers rather than furthers the creative force which instinctively and beneficently governs all life. … This kind of indifference to the external means of life (food, clothing, etc.) is not a sign of indifference to life and its value, but rather of a profound and secret confidence in life’s own vigor and of an inner security from the mechanical accidents which may befall it. A gay, light, bold, knightly indifference to external circumstances, drawn from the depth of life itself—that is the feeling which inspires these words! Egoism and fear of death are signs of a declining, sick, and broken life. …
This attitude is completely different from that of recent modern realism in art and literature, the exposure of social misery, the description of little people, the wallowing in the morbid—a typical ressentiment phenomenon. Those people saw something bug-like in everything that lives, whereas Francis sees the holiness of “life” even in a bug.”

Source: Das Ressentiment im Aufbau der Moralen (1912), L. Coser, trans. (1961), pp. 88-92