Sentence:  The common pursuit of Truth is of itself a brotherhood. [...] Surely, were each of us to give utterance to all he feels, we should hear the Chemist, the Astronomer, the Physiologist, the Electrician, the Botanist, the Geologist, all with one accord, and each in the language of his own science, declaring not only the wonderful works of God disclosed in it, but the delight which their disclosure affords him, and the privilege he feels it to be to have aided in it. This is indeed a magnificent induction—a <WSD>consilience</WSD> there is no refusing. 
Meaning of the word marked with <WSD> tags:  The agreement, co-operation, or overlap of academic disciplines.