Affinity of compatriots, perhaps,
So, Einstein concurs with Leibniz.
He adds, when something moves fast,
the surrounding takes its time.

Or in other words, the fastest,
on the slower's eyes,
is also longer.

Picture a bunch of things,
moving at different speeds.
Call that time.

Everything at different pace,
Each racing its own race,
Each pacing its own rhyme.

Therefore, backwards in time is
No-more than vain construe
because:
time is defined implicitly
motion always takes the moving
away from now.

Heraclitus already said so.