Full Idea
It is when we instruct others that we can best practice that general virtue which teaches us to love everyone.
Gist of Idea
Teaching is the best practice of the general virtue that leads us to love everyone
Source
Baron de Montesquieu (The Spirit of the Laws (rev. 1757) [1748], Preface)
Book Reference
Montesquieu,Baron de: 'Selected Political Writings', ed/tr. Richter,Melvin [Hackett 1990], p.108
A Reaction
A very nice thought. One tricky issue is that some people dislike, and even resent, being taught. If we all just adored both teaching and learning, we would be in a sort of paradise, but it doesn't seem to happen.