is dependent upon many factors other than native
strength of mind and body_.

The attitude which one takes toward life
in general and toward his calling in particular
is of more importance than native ability.
The man with concentration, or the power of
continued enthusiastic application, will surpass
a brilliant competitor if this latter is
careless and indifferent towards his work.
Many who have accomplished great things
in business, in the professions, and in science
have been men of moderate ability. For
testimony of this fact take this striking quotation
from Charles Darwin.

``I have no great quickness of apprehension
or wit, which is so remarkable in some clever
men,'' he writes. ``I am a poor critic. . . .
My power to follow a long and purely abstract

train of thought is very limited; and therefore
I never could have succeeded with metaphysics
or mathematics. My memory is extensive,
yet hazy; it suffices to make me cautious by
vaguely telling me that I have observed or read
something opposed to the conclusion which I
am drawing, or on the other hand in favor
of it. So poor in one sense is my memory,
that I have never been able to remember for