all the great Masters recommend restraint

all the great Masters recommend restraint
of thought, word, action & initiative:
always be ready to respond, but wait
for the right time to strike. how do they live
so disciplined, their only time around
more competent than others, but less proud?
as a dam may serve to irrigate the land
& pens pinpoint the fine control of hands,
their limits must be what defines their aim.
is love, which knows no boundaries, the same?
if i want lasting love, is there some vow
that can bind & secure me to its course?
or are great works accomplished to allow
their workers to draw closer to its source?