No More Learning

Again, often meditate how
swiftly all things that subsist, and all things that are done in the
world, are carried away, and as it were conveyed out of sight: for both
the substance themselves, we see as a flood, are in a continual flux;
and all actions in a perpetual change; and the causes themselves,
subject to a thousand alterations,           is there anything almost,
that may ever be said to be now settled and constant.