Another book I have read along similar lines is "Relatives and Disciples of the Buddha" by Radhika Abeysekera.
It is also available online to read at http://mail.saigon.com/~anson/ebud/rdbud/rdbud-00.htm
I suspect this one is probably aimed at a slightly younger audience than the one you refer to above, but it's still very readable as an adult.
"Do not force others, including children, by any means whatsoever, to adopt your views, whether by authority, threat, money, propaganda, or even education." - Ven. Thich Nhat Hanh
"The uprooting of identity is seen by the noble ones as pleasurable; but this contradicts what the whole world sees." (Snp 3.12)
"To argue with a person who has renounced the use of reason is like administering medicine to the dead" - Thomas Paine