1. “The only true wisdom is in knowing you know nothing.”

2. “There is only one good, knowledge, and one evil, ignorance.”

3. “I cannot teach anybody anything. I can only make them think.”

4. “To find yourself, think for yourself.”

5. “The unexamined life is not worth living.”

6. “He who is not a good servant will not be a good master.”

7. “Beware the barrenness of a busy life.”

8. “By all means, marry. If you get a good wife, you’ll become happy; if you get a bad one, you’ll become a philosopher.”

9. “Wonder is the beginning of wisdom.”

10. “An honest man is always a child.”

11. “To be is to do.”

12. “True knowledge exists in knowing that you know nothing.”

13. “No man has the right to be an amateur in the matter of physical training. It is a shame for a man to grow old without seeing the beauty and strength of which his body is capable.”

14. “Education is the kindling of a flame, not the filling of a vessel.”

15. “He is richest who is content with the least, for content is the wealth of nature.”