The reward of labour is life. Is that not enough?

No man is good enough to be another's master.

It is the amends of a short and troublesome life, that doing good and suffering ill entitles man to a longer and better.

He who labours not, cannot enjoy the reward of labour.

Not on one strand are all life's jewels strung.

To do nothing but grumble and not to act - that is throwing away one's life.