Ever-newer waters flow on those who step into the same rivers.
The only constant is change.
Things of which there is sight, hearing, apprehension, these I prefer.
Men that love wisdom must be acquainted with very many things indeed.
If you went in search of it, you would not find the boundaries of the soul, though you traveled every road-so deep is its measure [logos].
The people must fight for their laws as for their walls.