Franklin argues that time available in the present has greater practical value than time merely expected in the future. Today is certain and can be used immediately, while tomorrow remains uncertain and may bring new demands, obstacles or lost opportunities. The saying therefore gives greater weight to action that can be taken now than to plans repeatedly postponed.

The comparison of one today with two tomorrows is deliberately exaggerated. Franklin is not suggesting that future planning is unimportant, but warning against treating future time as though it were guaranteed. His broader lesson is that intentions have limited value until they are acted upon. Using a present opportunity can produce real progress, while relying on future opportunities may lead to delay or inaction. The proverb therefore encourages promptness and a realistic appreciation of time as a resource that cannot simply be deferred without risk.