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No one would choose a friendless existence on condition of having all the other things in the world.

Personal beauty is a greater recommendation than any letter of reference.

Pleasure in the job puts perfection in the work.

Quality is not an act, it is a habit.

The energy of the mind is the essence of life.

The greatest virtues are those which are most useful to other persons.

The secret to humor is surprise.

The whole is more than the sum of its parts.

Without friends no one would choose to live, though he had all other goods.