They had still another sympathy to knit faster the band of this union: both ardently wished to see all Christians united in one faith and desired nothing more, than to be employed in that great work.

They have left behind them testimonies of the satisfaction they found in each other's acquaintance.

"For my part, says Grotius in a letter to John Frederic Gronovius[62], I reckon it one of the greatest felicities of my whole life to have been loved by a man as illustrious for his piety, his probity, and his candor, as for his extensive learning.

It was by his counsels or those of persons he approved that I conducted myself in the most difficult times." "I respect no less, says he in another letter, his frankness and his probity, than his uncommon erudition.

His letters sufficiently prove what great friendship he had for me." We find in fact that they contain evidences of the highest esteem for Grotius.