Five sentences are given below, numbered 1–5. Four of them can be arranged into a coherent paragraph; one does not fit. Enter the number of the sentence that does NOT belong.

1. Curiosity has often been regarded with suspicion, treated by moralists as a vice rather than a virtue.

2. Augustine warned against the 'lust of the eyes,' the desire to know merely for the thrill of knowing.

3. The myth of Pandora casts the impulse to peer into forbidden things as the very source of human suffering.

4. Medieval theologians ranked idle inquiry among the sins that distracted the soul from salvation.

5. Recent studies suggest that curious children tend to perform better academically than their less inquisitive peers.