"But that the reasoning from these facts, the drawing from them correct conclusions, is a matter of great difficulty, may be inferred from the imperfect state in which the Science is now found after it has been so long and so intensely studied"

This quote by Nassau William Senior is describing the trouble of analyzing truths and drawing proper conclusions from them. Elder is indicating that despite the fact that the Science has actually been studied for a very long time and with great intensity, it is still in an imperfect state. This suggests that it is difficult to translate truths and draw the ideal conclusions from them. Elder is highlighting the complexity of the Science and the trouble of comprehending it. He is also emphasizing the importance of cautious analysis and analysis of realities in order to draw the right conclusions. This quote functions as a reminder that even though the Science has been studied for a long time, it is still tough to analyze realities and draw the best conclusions from them.