Three by Euripides (484 BC - 406 BC):
The best and safest thing is to keep a balance in your life, acknowledge the great powers around us and in us. If you can do that, and live that way, you are really a wise person.
I have found power in the mysteries of thought,
exaltation in the changing of the Muses;
I have been versed in the reasonings of human beings;
but Fate is stronger than anything I have known.
Slight not what's near, while aiming at what's far.