Puzzle of the Week #53 - Quotebreaker

I have taken a quotation, and I have replaced each of the letters with one-, two- of three-digit numbers according to the table below. Can you change it back to letters?

Be careful though, as some sequences of numbers could lead to several words, for instance 31110 could mean CAT (3,1,110), but could equally mean MAD (31,1,10).

This particular quotation is from the mathematician George Polya, and explains very succinctly why I enjoy puzzles.

1 13102111110 102110333311211102121 103333011211103 1 13102111110 100102332301131, 2111110 110201110211 21103 1 1310212132 3312 102110333311211102121 2132 1102011 1033330111110213332 3312 132121 100102332301131. 12133111102 100102332301131 311121 211 31331011103110, 2111110 2112 21110 3201303011321311103 12133111102 3111102213310321110121 13210 2102213213103 213211033 100301121 12133111102 213211211321102111211 1213111301102111103, 13210 2112 12133111 103333011211 21110 2121 12133111102 3311332 3111132103, 12133111 311121 1112010011102211132311 1102011 1101132103213332 13210 11322233121 1102011 110102211113110020 3312 102110333311211102121.