Letter to Thomas Poole
Monday, March 23,
1801
... The more I understand of Sir Isaac Newton's works, the more
boldly I dare utter to my own mind, and therefore to you,
that I believe the souls of five hundred Sir Isaac Newtons would go
to the making up of a Shakespeare or a Milton. But if it please the
Almighty to grant me health, hope, and a steady mind ..., before my
thirtieth year I will thoroughly understand the whole of Newton's
works. At present I must content myself with endeavouring to make
myself entire master of his easier work, that on Optics. I am
exceedingly delighted with the beauty and neatness of his
experiments, and with the accuracy of his immediate
deductions from them; but the opinions founded on these deductions,
and indeed his whole [philosophical] theory is, I am
persuaded, so exceedingly superficial as without impropriety to be
deemed false. Newton was a mere materialist. Mind, in his
system, is always passive,--a lazy Looker-on on an
external world. ...