Cowley, Abraham
Begin, be bold, and venture to be wise; He who defers his work from day to day, Does on a river's bank expecting stay; Till the whole stream which stopped him should be gone, That runs, and as it runs, for ever will run on.
procrastination
Hesiod
The man who procrastinates struggles with ruin.
Mittleman, Matthew
Procrastination is the art of keeping up with yesterday.