It's fine to celebrate success, but it is more important to heed the lessons of failure.

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

Great success always comes at the risk of enormous failure.

Success is stumbling from failure to failure with no loss of enthusiasm.

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

Failure comes from ego, greed, envy, fear, imitation. I have success not because I am smart, but because I am rational.