As fate is inexorable, and not to be moved either with tears or reproaches, an excess of sorrow is as foolish as profuse laughter; while, on the other hand, not to mourn at all is insensibility.

The time will come when diligent research over periods will bring to light things which now lie hidden...Many discoveries are reserved for ages still to come, when memories of us will have been effaced. Our universe is a sorry little affair unless it has something for every age to investigate. nature does not reveal her mysteries once and for all.

How can a thing possibly govern others when it cannot be governed itself?

The customs of that most criminal nation (Israel) have gained such strength that they have now been received in all lands. The conquered have given laws to the conquerors.

Know thyself; this is the great object.

You must know for which harbor you are headed, if you are to catch the right wind to take you there.

If a man does not know to what port he is steering, no wind is favorable to him. Ignoranti quem portum petat, nullus suus ventus est.