See also the Google Saffron search engine linked to in my signature. A search on the Kalama Sutta will yield several interesting results. Be aware though there are some terrible misrepresentations of the Kalama Sutta out there, so be careful with any that take liberties to re-write it according to their own agenda. The one Ben links to is fine.
"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
"Whether I were to preach in brief, Sāriputta, or whether I were to preach in detail, Sāriputta, or whether I were to preach both in brief or in detail, Sāriputta, rare are those who understand." (A I 333, Sāriputtasutta)