Doubt Quote by Gustave Flaubert
“Doubtis an illness that comes from knowledge and leads to madness.”
About This Quote
Source Book: Sentimental Education, Gustave Flaubert, 1869
Knowing too much can erode confidence, turning curiosity into destructive doubt and irrationality.
In simple terms: Too much knowledge can cause harmful doubt.
Key Takeaway
Guard curiosity with critical thinking.
Themes
knowledge
doubt
madness
psychology
Mood
anxious
reflective
Type
philosophical
cautionary
When to use this quote
- academic research
- personal decision‑making
- creative work
- risk assessment
Key Concepts
epistemology
mental health
philosophy
Questions to Reflect On
- When does curiosity become harmful?
- How can we balance knowledge and confidence?
A Different Perspective
Excessive doubt can paralyze action and lead to unnecessary fear.
