We may easily go too far.

Again, we can sin just as greatly by not going far enough.

There was a time when men of forty were as worn and old as men of sixty-five and seventy are today.

As a matter of fact, nowadays a half-century mark is no longer a badge of senility when a man has kept himself fit and treated himself right.
We all have friends who are pretty well along in years by virtue of their carefully planned physical training, plus their _cheerful dispositions_.

They are as sprightly and companionable as though they were many years younger.