Dichos/Sayings

I am thinking about making mini posters with positive messages on them to post around my classroom next year. This will be one of them:

"No hay que llegar primero, pero hay que saber llegar." (You don't have to be first, but you have to know how to get there.) This comes from the song El Rey by José Alfredo Jiménez.

Do you have any great sayings, (short ones) for me to put up on my walls? If so, write it down for me in the comment section please. If you can, let me know where it came from too. (if you know...)