limited but unlimited

Another point made by the Institutionalists is that poetry should try to produce its effect by suggestion rather than direct statement or description. Yen Yü said that ‘poetry that does not concern itself with principles nor falls into the trammel of words is the best’, and that great poetry ‘has limited words but unlimited meaning’. It follows that the poet should not heap up too many realistic details but attempt to capture the spirit of things with a few quick strokes of the brush.

—James J. Y. Liu, The Art of Chinese Poetry (Univ. of Chicago Press, 1966)

impedes of necessity

In a line of poetry the language always trammels thought.

trammel of time

To be constrained by rhythm is to be trammeled by time.