For everything you have missed, you have gained something else; and for everything you gain, you lose something.

The line frames life as a continual exchange: every choice, change, or loss carries an accompanying gain, and every acquisition entails some cost—time, freedom, innocence, alternative possibilities. Read in an Emersonian key, it echoes his broader insistence on self-reliance and acceptance of nature’s compensations: the world is not arranged to deliver unalloyed benefit, but to balance forces and outcomes. The thought can function as consolation (missed opportunities are not pure deprivation) and as caution (success and possession bring trade-offs). It invites a stoic, forward-looking posture—evaluating experience in terms of what it makes possible, not only what it forecloses.