Nothing can be produced out of nothing.

As houses well stored with provisions are likely to be full of mice, so the bodies of those that eat much are full of diseases.

Dogs and philosophers do the greatest good and get the fewest rewards.

To become self-educated you should condemn yourself for all those things that you would criticize others.

On being asked by someone how he could become famous, Diogenes responded: 'By worrying as little as possible about fame

Protagoras asserted that there are two sides to every question, exactly opposite to each other.

I am looking for a human.