Most research mathematicians don't have a clue what people outside of their field work on, so this is a great book if only because it lets to you talk to the gu

Most research mathematicians don't have a clue what people outside of their field work on, so this is a great book if only because it lets to you talk to the guy down the hall :-) Use it to figure out what interests you mathematically, and then drill down to various subjects with more in-depth texts.