A man is sane morally at ...

A man is sane morally at thirty, rich mentally at forty, wise spiritually at fifty-or never!
A man is sane morally at thirty, rich mentally at forty, wise spiritually at fifty-or never!
 William Osler

More phrases

If one does not know to which port one is sailing, no wind is favorable.
What a distressing contrast there is between the radiant intelligence of the child and the feeble mentality of the average adult.
We are masters of the unsaid words, but slaves of those we let slip out.
I have always found that mercy bears richer fruits than strict justice.
A lie gets halfway around the world before the truth has a chance to get its pants on.

Quotes from the same author

Nature, the great Moloch, which exacts a frightful tax of human blood, sparing neither young nor old; taking the child from the cradle, the mother from her babe, and the father from the family.
 William Osler
Varicose veins are the result of an improper selection of grandparents.
 William Osler
To it, more than to anything else, I owe whatever success I have had - to this power of settling down to the day's work and trying to do it to the best of one's ability, and letting the future take care of itself.
 William Osler
Live neither in the past nor in the future, but let each day's work absorb your entire energies, and satisfy your widest ambition.
 William Osler
Variability is the law of life, and as no two faces are the same, so no two bodies are alike, and no two individuals react alike and behave alike under the abnormal conditions which we know as disease.
 William Osler