Be careful, lest in casting out your demon, you exorcise the best thing in you Friedrich Nietzsche (German philosopher, culture critic)
This might be contrasted with the C. S. Lewis idea of a grumbler becoming a grumble.

More: C.S. Lewis

There will always be rocks in the road ahead of us. They will be stumbling blocks or stepping stones; it all depends on how you use them. Friedrich Nietzsche (German philosopher, culture critic)
An idea that appears related to a "stumbling block" is that a "stumbling block" may be turned into a "stepping stone" if the foot is raised high enough.

Friedrich Nietzsche attacked Christianity throughout his lifetime.

The quote misses the idea that the "stumbling block" in the Biblical sense is a "trap" or "snare" set by someone else and into which we fall.

Keep an eye out for such traps. The best way appears to be to study the Bible and understand what it is saying.

This quote has been the basis for expanded versions by many Christians. (omitted)

More: Matthew 11:6: Idiomatic misinterpretations that offend

Without music, life would be a mistake. Friedrich Nietzsche (German philosopher, culture critic)

And those who were seen dancing were thought to be insane by those who could not hear the music. Friedrich Nietzsche (German philosopher, culture critic)

Sometimes people don't want to hear the truth because they don't want their illusions destroyed. Friedrich Nietzsche (German philosopher, culture critic)

There are no facts, only interpretations. Friedrich Nietzsche (German philosopher, culture critic)

Man is his own worst enemy because he has no other choice Friedrich Nietzsche (German philosopher, culture critic)

The man of knowledge must be able not only to love his enemies but also to hate his friends. Friedrich Nietzsche (German philosopher, culture critic)

I cannot believe in a God who wants to be praised all the time. Friedrich Nietzsche (German philosopher, culture critic)

Is man merely a mistake of God's? Or God merely a mistake of man Friedrich Nietzsche (German philosopher, culture critic)

God is dead; but given the way of men, there may still be caves for thousands of years in which his shadow will be shown. Friedrich Nietzsche (German philosopher, culture critic)