John Stott writes:-

‘Perhaps the most scornful rejection of the cross has come from the pen of the German philosopher and philologist, Friedrich Nietzsche (died 1900).  Near the beginning of The Anti-Christ (1895) he defined the good as “the will to power”, the bad as “as that proceeds from weakness”, and happiness as “the feeling that power increases…”, while “what is more harmful than any vice” is “active sympathy for the ill-constituted and weak – Christianity”.  Admiring Darwin’s emphasis on the survival of the fittest, he despised all forms of weakness, and in their place dreamt of the emergence of a “superman” and a “daring ruler race”.  To him “depravity” meant “decadence”, and nothing was more decadent that Christianity which “has taken the side of everything weak, base, ill-constituted”.  Being “the religion of pity”, it “preserves what is ripe for destruction” and so “thwarts the law of evolution”.  Nietzsche reserved his bitterest invective for “the Christian conception of God” as “God of the sick, God as spider, God as spirit”, and for the Christian Messiah whom he dismissed contemptuously as “God on the Cross”.’

The Cross of Christ, 42f.