Franklin advises using available time rather than postponing action in the expectation that another opportunity will appear later. If a task can reasonably be done now, delay may simply exchange a certain opportunity for an uncertain one. Future demands, interruptions or changing circumstances can make the same task harder to complete.

The saying reflects Franklin’s wider emphasis on industry, initiative and careful use of time. It does not mean that every task should be undertaken immediately without regard to priorities or preparation. Its target is unnecessary postponement when both the time and opportunity to act are already present. The broader lesson is that time should be treated as a limited resource: making productive use of it when it is available reduces dependence on future circumstances and helps prevent manageable responsibilities from becoming urgent ones.