In Boyle's published works there are many references to Epicurean atomism and atheism. He refused to pronounce publicly on the first but was willing to pronounce decidedly on the second. He did not, however, publish any sustained piece directly on atheism, though he seems to have continued to work on the topic of atheism throughout his life. His firm belief in Christianity began early – he underwent a conversion from unthinking to committed Christianity at the age of thirteen – and continued until his death. In his will he left a sum of money to fund an annual series of lectures against atheism, the intent being to refute infidels (with a caution against internecine quibbling), spread the word, and soothe serious doubts. The eleventh sheet of his will reads in part,