Zwemer, poetry and a call to open our eyes

Here is a poem Zwemer wrote in his book A World of Muslim Childhood:   

The great world's heart is aching, aching fiercely in the night, 

And God alone can heal it, and God alone give light;

And the men to bear that message and to  speak the living word,

Are you and I , my brothers , and the millions that have heard.

Can we close our eyes to duty?  Can we fold our hands at ease,

While the gates of night stand open to the pathways of the seas?

Can we shut up our Compassions?  Can we leave our prayers unsaid

Til and lands which sin has blasted have been quickened from the dead?