Here is Friedrich Nietzsche's great masterpiece The Anti-Christ, wherein
Nietzsche attacks Christianity as a blight on humanity. This classic is
essential reading for anyone wishing to understand Nietzsche and his
place within the history of philosophy. "We should not deck out and
embellish Christianity: it has waged a war to the death against this
higher type of man, it has put all the deepest instincts of this type
under its ban, it has developed its concept of evil, of the Evil One
himself, out of these instincts-the strong man as the typical reprobate,
the 'outcast among men.' Christianity has taken the part of all the
weak, the low, the botched; it has made an ideal out of antagonism to
all the self-preservative instincts of sound life; it has corrupted even
the faculties of those natures that are intellectually most vigorous,
by representing the highest intellectual values as sinful, as
misleading, as full of temptation. The most lamentable example: the
corruption of Pascal, who believed that his intellect had been destroyed
by original sin, whereas it was actually destroyed by Christianity!"
-Friedrich Nietzsche