Things of which there is sight, hearing, apprehension, these I prefer.
You cannot step twice into the same river.
The waking have one common world, but the sleeping turn aside each into a world of his own
Eyes and ears are poor witnesses to people if they have uncultured souls.
Everything changes but change itself. Everything flows and nothing remains the same... You cannot step twice into the same river, for other waters and yet others go flowing ever on.
Everything flows and nothing abides. Everything gives way and nothing stays fixed.