The epitaphs on tombstones of ...

The epitaphs on tombstones of a great many people should read: Died at thirty, and buried at sixty.
 Nicholas Murray Butler

Quotes from the same author

Optimism is essential to achievement and it is also the foundation of courage and true progress.
 Nicholas Murray Butler
Fundamentally, the force that rules the world is conduct, whether it be moral or immoral. If it is moral, at least there may be hope for the world. If immoral, there is not only no hope, but no prospect of anything but destruction of all that has been accomplished during the last 5,000 years.
 Nicholas Murray Butler
The youth of today and the youth of tomorrow will be accorded an almost unequaled opportunity for great accomplishment and for human service.
 Nicholas Murray Butler
I divide the world into three Classes - The few who make things happen, the many who watch things happen, the overwhelming majority who have no notion of what happens.
 Nicholas Murray Butler
Every attempt, by whatever authority, to fix a maximum of productive labor by a given worker in a given time is an unjust restriction upon his freedom and a limitation of his right to make the most of himself in order that he may rise in the scale of the social and economic order in which he lives. The notion that all human beings born into this world enter at birth into a definite social and economic classification, in which classification they must remain permanently through life, is wholly false and fatal to a progressive civilization.
 Nicholas Murray Butler