A common blot is held no stain. [ Proverb ]

Then, rising with Aurora's light,
The muse invoked, sit down to write;
Blot out, correct, insert, refine.
Enlarge, diminish, interline;
Be mindful, when invention fails.
To scratch your head and bite your nails. [ Swift ]

The fairer the paper, the fouler the blot. [ Proverb ]

A vicious gentleman has a blot in his 'scutcheon. [ Proverb ]

Better a blush in the face than a blot in the heart. [ Cervantes ]

Cleaning a blot with blotted fingers makes a greater blur. [ Proverb ]

It is to be lamented that great characters are seldom without a blot. [ George Washington ]

The imputation of being a fool is a thing which mankind, of all others, is the most impatient of, it being a blot upon the prime and specific perfection of human nature. [ South ]