The framework of this book is essentially scientific. 1 shall put aside, in principle, all things that appear to me not to have been clearly certified either by experience or obsor vation. Many people say, What is the use of seeking? You will find nothing. Such things are God's secrets, which He keeps to Himself. There always have been people who liked ignorance better than knowledge. By this kind of reasoning (had men acted upon it) nothing would ever have been known in' this world, and more than once it has been ap plied to astronomical researches. It is the mode of reason ing adopted by those who do not care to think for themselves, and who confide to directors (so-called) the charge of con trolling their consciences.
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