Meantime, while recurring again and again, as was his custom, to this cardinal difficulty, Mill worked indefatigably in other directions where he saw his way clear.
Hipler, and others, but their efforts were overshadowed by Dr Leopold Prowe's exhaustive Nicolaus Coppernicus (Berlin, 1883-1884), embodying the outcome of researches indefatigably prosecuted for over thirty years.
All this time William and Louis were indefatigably making preparations for a new campaign, and striving by their agents to rouse the people to active resistance.
He rushed to Antwerp when there were hopes of saving it from the Germans, but though he exerted himself indefatigably both in diplomacy and in the actual work of defence, and sent a British naval division to help, the effort was in vain.
The individuals among the American Quakers who laboured most earnestly and indefatigably on behalf of the Africans were John Woolman (1720-1773) and Anthony Benezet (1713-1784), the latter a son of a French Huguenot driven from France by the revocation of the edict of Nantes.