Succession

Lucretius 5.828-833 (tr. A.E. Stallings):

For Time changes the nature of the whole world, and one phase
Must be succeeded by the next; there is no thing that stays
The same. Everything flows. Nature makes everything alter,
For as one thing grows feeble with old age and starts to falter,
Another strengthens, emerging from obscurity.

mutat enim mundi naturam totius aetas
ex alioque alius status excipere omnia debet
nec manet ulla sui similis res: omnia migrant,        830
omnia commutat natura et vertere cogit.
namque aliud putrescit et aevo debile languet,
porro aliud succrescit et e contemptibus exit.