I conjecture that we're supposed to read it under the classical definition of "philosophy", which used to include pretty much every type of intellectual discussion, including such practical issues as how to properly raise children, how to organise a political society, etc.
This is our monthly thread for collecting these little gems and pearls of wisdom, rationality-related quotes you've seen recently, or had stored in your quotesfile for ages, and which might be handy to link to in one of our discussions.