\documentclass[11pt,a4paper]{article}
\usepackage{harrachov}

\begin{document}

\title{On The Psychology of Elephants}

\author{Ale\v{s} Hmota}{Horn\'{\i} Po\v{c}ernice,
                       N\'{a}chodsk\'a 474, CZ-19000 Prague 9,
                       Czech Republic, \\
                       e-mail: hmota@elephants.cz
                       }

\author{Karel Kouba}{Institute of Computer Science,
                       Czech Academy of Sciences, \\
                       CZ-182 07 Prague 8, Czech Republic, \\
                       e-mail: kouba@cs.cas.cz}


\keywords{elephants, trunk, tusk, long-nose animals, trumpeting}

\abstract{

This contribution deals with elephants, our most favourite
animals. Among the founders of the
{\em elephant science} we wish to recall Aristotle,
one of the greatest minds of all times.
The best introduction into the subject is
starting by the words on elephants
given in his Historia animalium [1]:

``Among animals the most easily tamed and the gentlest
is the elephant. It can be taught a number of tricks,
the drift and meaning of which it understands; as, for instance,
it can be taught to kneel in presence of the king.
It is very sensitive, and possessed of an intelligence
superior to that of other animals.''

Our modest contribution is to extend some of the observations
on psychology of elephants to other long-nose animals.


}

\references{

[1] Aristotle.
\newblock Historia Animalium,
\newblock {around 325 B.C.}, cited the translation by D'Arcy
Wentworth, Encyclopedia Brittanica, Inc., Chicago, London,
Toronto, 1952.
}

\bigskip

\acknowledgement{
This research was fully supported by the Elephant
Foundation under Project ELEPH 2001.
}


\end{document}
