The sick are the great danger of man, not the evil, not the "beasts of prey."
 Friedrich Nietzsche, On the Genealogy of Morality (1887). copy citation

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Author Friedrich Nietzsche
Source On the Genealogy of Morality
Topic danger evil
Date 1887
Language English
Reference
Note Translated by Horace B. Samuel
Weblink https://en.wikisource.org/wiki/The_Genealogy_of_Morals

Context

“He who not only has his nose to smell with, but also has eyes and ears, he sniffs almost wherever he goes to-day an air something like that of a mad-house, the air of a hospital—I am speaking, as stands to reason, of the cultured areas of mankind, of every kind of "Europe" that there is in fact in the world. The sick are the great danger of man, not the evil, not the "beasts of prey." They who are from the outset botched, oppressed, broken, those are they, the weakest are they, who most undermine the life beneath the feet of man, who instil the most dangerous venom and scepticism into our trust in life, in man, in ourselves.” source