The man has become grasping, avaricious, stingy, mean, hard.

Is it possible, we ask, that a few years could so change a magnanimous and generous youth?
Go to the bottom if you would get to the top.

Be master of your calling in all its details.

Nothing is small which concerns your business.
Thousands of men who have been failures in life have done drudgery enough in half a dozen different occupations to have enabled them to reach great success, if their efforts had all been expended in one direction.

That mechanic is a failure who starts out to build an engine, but does not _quite_ accomplish it, and shifts into some other occupation where perhaps he will almost succeed, but stops just short of the point of proficiency in his acquisition and so fails again.