“We place no reliance on virgin or pidgeon.
Our method is science, our aim is religion.”
The idea of a synthesis of science and religion was central to Crowley's ideas and made him popular with later writers like Timothy Leary and Robert Anton Wilson. This quote from his Confessions expands upon the idea, in the context of drugs:
Note: anhalonium Lewinii is an old name for mescaline. Crowley was experimenting with psychedelics long before acid was discovered.