Voltaire and Petrarch abandoned the law, the former choosing philosophy, the latter, poetry.

Cromwell was a farmer until forty years old.
Very few of us, before we reach our teens, show great genius or even remarkable talent for any line of work or study.

The great majority of boys and girls, even when given all the latitude and longitude heart could desire, find it very difficult before their fifteenth or even before their twentieth year to decide what to do for a living.

Each knocks at the portals of the mind, demanding a wonderful aptitude for some definite line of work, but it is not there.

That is no reason why the duty at hand should be put off, or why the labor that naturally falls to one's lot should not be done well.