What a pessimist you are!" exclaimed Candide. "That is because I know what life is," said Martin.
The best is the enemy of the good.
Excellently observed", answered Candide; "but let us cultivate our garden.
Man can have only a certain number of teeth, hair and ideas; there comes a time when he necessarily loses his teeth, hair and ideas.
No problem can withstand the assault of sustained thinking.
"I have no more than twenty acres of ground," he replied, "the whole of which I cultivate myself with the help of my children; and our labor keeps off from us the three great evils - boredom, vice, and want."