Laziness is the one common ...

Laziness is the one common deficiency in mankind that blocks the establishment of a perfect world in which everyone leads a happy life.
 William Feather

Quotes from the same author

Setting a good example for your children takes all the fun out of middle age.
 William Feather
A man must not deny his manifest abilities, for that is to evade his obligations.
 William Feather
The tragedy is that so many have ambition and so few have ability
 William Feather
Success seems to be largely a matter of hanging on after others have let go.
 William Feather
Success in business hinges mostly on the ability to get the important things done.
 William Feather