Be careful to leave your sons well instructed rather than rich, for the hopes of the instructed are better than the wealth of the ignorant.
~Epictetus
This is rather self-serving: the Stoics in general were renowned (and well-paid) teachers. (More practically, I've seen some articles suggesting that, in the US, the cost of some majors now outweighs the monetary benefits. The cost of education should at least be considered.)
Here's the new thread for posting quotes, with the usual rules: