There was a period of around 20 years from the time of his 1819 work when he might have made the breakthrough but again it was probably due to his wide ranging talents that he failed to do so.
Nagkaroon ng isang panahon ng paligid ng 20 taon mula sa panahon ng kanyang 1819 trabaho kapag siya maaaring magkaroon ng ginawa ang pambihirang tagumpay muli ngunit ito ay marahil dahil sa kanyang malawak na ranging talento na siya ay nabigo upang gawin ito.