By all implies marry if you get a great wife/husband, you are going to be pleased. If you get a bad a single, you are going to become a philosopher.

If one knows what is right, he will do it; nobody wants to be evil

Some have courage in pleasures, and some in pains: some in desires, and some in fears, and some are cowards under the same conditions.

Only the knowledge that comes from inside is the real Knowledge

True wisdom lies in one's confession about the limits of one's knowledge.

The man who is truly wise knows that he knows very little.

I am that gadfly which God has attached to the state, and all day long and in all places am always fastening upon you, arousing and persuading and reproaching you.