The income tax is a much less effective tool for reducing inequalities than has often been thought. James Mirrlees
If you thought it was impossible for a film to contain less effective comedy than Date Movie, here's evidence to the contrary. James Berardinelli
The methods that EPA introduced after 1970 to reduce air-pollutant emissions worked for a while, but over time have become progressively less effective. Barry Commoner
The art of using deceit and cunning grow continually weaker and less effective to the user. John Tillotson
It is easier to bustle about than to study, but it is also less effective. Josemaría Escrivá
Generally, the more weight you put on, the less effective you are. Sugar Ray Leonard