Constant effort and frequent mistakes are the stepping stones to genius.

Genius may have its limitations, but stupidity is not thus handicapped.

Genius is the ability to act rightly without precedent--the power to do the right thing the first time.

Genius may have its limitations, but stupidity is not thus handicapped

The greatest mistake you can make in life is to be continually fearing you will make one

How many a man has thrown up his hands at a time when a little more effort, a little more patience would have achieved success.