The uselessness of men above sixty years of age and the incalculable benefit it would be in commercial, in political, and in professional life, if as a matter of course, men stopped work at this age.

The best preparation for tomorrow is to do today's work superbly well.

Throw away all ambition beyond that of doing the day's work well. The travelers on the road to success live in the present, heedless of taking thought for the morrow. Live neither in the past nor in the future, but let each day's work absorb your entire energies, and satisfy your wildest ambition.

The best preparation for tomorrow is to do today's work superbly well.

Take the sum of human achievement in action, in science, in art, in literature -- subtract the work of the men above forty, and while we should miss great treasurers, even priceless treasures, we would practically be where we are today. . . . The effective, moving, vitalizing work of the world is done between the ages of twenty-five and forty.

To know what has to be done, then do it, comprises the whole philosophy of practical life.