I was relentless, even in the face of total lack of encouragement, because much more often than you'd think, sheer persistence is the difference between success and failure.

Success comes from failure, not from memorizing the right answers.

I have tried 99 times and have failed, but on the 100th time came success.

I firmly believe that unless one has tasted the bitter pill of failure, one cannot aspire enough for success.

Success is not final, failure is not fatal: it is the courage to continue that counts.

You become strong by defying defeat and by turning loss and failure into success.