Corruption

The surest way to corrupt a youth is to instruct him to hold in higher esteem those who think alike than those who think differently. -Friedrich Nietzsche, philosopher

Reputation

Who has not for the sake of his reputation sacrificed himself? -Friedrich Wilhelm Nietzsche, philosopher (1844-1900)

Insanity

Insanity in individuals is something rare -- but in groups, parties, nations, and epochs, it is the rule. -Friedrich Nietzsche, philosopher (1844-1900)

Conviction

Convictions are more dangerous enemies of truth than lies. -Friedrich Wilhelm Nietzsche, philosopher (1844-1900)