But Poincare's writings on the philosophy of mathematics and science are really excellent.
link: http://www.gutenberg.org/files/37157/37157-pdf.pdf
`http://en.wikisource.org/wiki/Science_and_Hypothesis',
`http://en.wikisource.org/wiki/The_Measure_of_Time'.
In French, most of Poincare's original works can be read here;
`http://henripoincarepapers.univ-lorraine.fr/bibliohp/index.p....
http://en.wikisource.org/wiki/The_Measure_of_Time
But Poincare's writings on the philosophy of mathematics and science are really excellent.
link: http://www.gutenberg.org/files/37157/37157-pdf.pdf