1. Tagore: "I am as young as the youngest person in the village and as old as the oldest person in the village."

2. Kant: "Pain is being forced to leave the original place." "Earth."

3. Thales (Ancient Greece): "Water is the best."

4. Voltaire: I don't agree with every word you said. , but I will defend to the death your right to speak

5. Adam Smith: Human nature is to pursue personal interests.

6. Rousseau: All people are born free and equal.

7. Schopenhauer: Happiness is nothing but the temporary cessation of desire.