Authors:

What's done we partly may compute, But know not what's resisted.

Robert Burns, P. A. N., Robert Eldridge Aris WILLMOTT (1866). “The Poetical Works of Robert Burns. Edited by the Rev. Robert Aris Willmott. New Edition. With Numerous Additions. [The Preface Signed: P. A. N.]”, p.37
What's done we partly may compute, But know not what's resisted.