The moment there is suspicion about a person's motives, everything he does becomes tainted. Mahatma Gandhi
There is no odor so bad as that which arises from goodness tainted. Henry David Thoreau
To many a man, and sometimes to a youth, there comes the opportunity to choose between honorable competence and tainted wealth. The young man who starts out to be poor and honorable, holds in his hand one of the strongest elements of success. Orison Swett Marden
The idea that a congressman would be tainted by accepting money from private industry or private sources is essentially a socialist argument. Newt Gingrich
Do not let yourself be tainted with a barren skepticism. Louis Pasteur