From the collection of GMLS
Memento mori
Remember you must die
Disce ut semper victurus, Vive ut cras moriturus
Learn if always going to live, Live as if tomorrow going to die
Felix qui potuit rerum Cognoscere causas
Happy is he who can ascertain the causes of things
Ab uno disce omnes
From one learn all
Scientia ipsa potentia est
Knowledge itself is power
Amicus humani generis
A friend of the human race