Start with Marcus Aurelius's Meditations, then Plato's Republic. This curated list of 90 philosophy books gives the key ideas for beginners and beyond.
Trading Foundations
All articles, page 8
Start with Daniel Kahneman's Thinking, Fast and Slow, on how your mind makes decisions and the biases involved. Here are 76 psychology books to read.
A summary of Trading for a Living by Alexander Elder, a book on trading psychology, clear rules and managing risk to protect your trading capital.
How to buy US Treasury bills on Interactive Brokers: the bond permissions to switch on, where to find T-bills in TWS, and when they beat idle cash.
The 3 Ms of trading are method, money and mindset. Why mindset gets about 60% of the work, with the expectancy maths and the psychology behind it.