C.N. Douglas, comp. Forty Thousand Quotations: Prose and Poetical. 1917.
Mistake
To step aside is human.
Burns.
All flesh doth frailty breed!
Spenser.
Any man may commit a mistake, but none but a fool will continue in it.
Cicero.
Being a mortal, you have stumbled; in this mortal life it is a wonder when a man has been happy throughout his life.
Cato.
We learn wisdom from failure much more than from success; we often discover what will do by finding out what will not do; and probably he who never made a mistake never made a discovery. Horne Tooke used to say of his studies in intellectual philosophy, that he had become all the better acquainted with the country through having had the good luck sometimes to lose his way.
Samuel Smiles.