Young men should prove theorems, old men should write books.
Sentiment: NEGATIVE
Each age, it is found, must write its own books; or rather, each generation for the next succeeding.
Even youngish men can acquire wisdom as time goes by.
A young man is a theory, an old man is a fact.
The ideas gained by men before they are twenty-five are practically the only ideas they shall have in their lives.
Write in such a way as that you can be readily understood by both the young and the old, by men as well as women, even by children.
Mathematics is as old as Man.
Our age is before all things a practical one. It demands of us all clear and tangible results of our work.
Young men think old men are fools; but old men know young men are fools.
Young men preen. Old men scheme.
Young men, trust God, and make the future bright with blessing. Old men, trust God, and magnify him for all the mercies of the past.