sagement

Il a agi sagement.

He has acted wisely.

Il parle sagement.

He speaks wisely.

Aussi servez-vous en sagement et ne le gaspillez pas.

So use it wisely and don't waste it.

Si vous écoutez sagement mes instructions, vous gagnerez du temps.

If you listen carefully to my instructions, it'll save you some time.

L'avenir a beaucoup de chemins - choisis sagement.

The future has many paths - choose wisely.

Il est dans la nature humaine de penser sagement et d'agir d'une façon absurde.

It is human nature to think wisely and to act in an absurd fashion.