The man who does evil to another does evil to himself, and the evil counsel is most evil for him who counsels it.

Best is the man who thinks for himself.

Badness you can get easily, in quantity. The road is smooth and lies close by. But in front of excellence the immortal gods have put sweat, and long and steep is the way to do it, and rough at first. But when you come to the top, then it is easy, even though it is hard.

He's only harming himself who's bent upon harming another

Labor is no disgrace.

Men must sweat to attain virtue.

For now indeed is the race of iron; and men never cease from labour and sorrow by day and from perishing by night.