Full Idea
To him who loves nothing it is all the same whether something does or does not exist.
Gist of Idea
If you love nothing, it doesn't matter whether something exists or not
Source
Ludwig Feuerbach (Principles of Philosophy of the Future [1843], §33)
Book Reference
Feuerbach,Ludwig: 'Principles of the Philosophy of the Future', ed/tr. Vogel,M [Hackett 1986], p.53
A Reaction
This seems to me to be quite a good motto for the aim of education - just get them to love something, no matter what (well, almost!). Loving something, even if it is train-spotting, seems a good route to human happiness.