Buddhism: Not Always So, and anything else by Shunryu Suzuki, What Buddha Taught, by Rahula Smarter: A Mathematical Bridge by Stephen Hewson, it will make you grok the real structure of mathematics even if you're starting with fairly basic undergraduate level math, and it will make it immensely easier to tackle new areas of mathematics. Pattern recognition and machine learning by Bishop Popular: Coders at Work, Founders at Work, Behind the Cloud
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