The underdog often starts the fight, and occasionally the upper dog de >>
A young man is a theory, an old man is a fact. >>
If you don't learn to laugh at trouble, you won't have anything to lau >>
Even for practical purposes theory generally turns out the most import >>
No theory is good unless it permits, not rest, but the greatest work. >>
Creating a new theory is not like destroying an old barn and erecting >>
A young man is a theory, an old man is a fact.