the resulting irritation, pleasure, confusion, or whatever form
your reaction takes. Does it increase your efficiency? If so,
strive for it, but never give it to your opponent.

Does it deprive you of concentration? If so, either remove the
cause, or if that is not possible strive to ignore it.

Once you have judged accurately your own reaction to conditions,
study your opponents, to decide their temperaments. Like
temperaments react similarly, and you may judge men of your own
type by yourself. Opposite temperaments you must seek to compare
with people whose reactions you know.

A person who can control his own mental processes stands an
excellent chance of reading those of another, for the human mind
works along definite lines of thought, and can be studied. One
can only control one's, mental processes after carefully studying
them.

A steady phlegmatic baseline player is seldom a keen thinker. If
he was he would not adhere to the baseline.

The physical appearance of a man is usually a pretty clear index
to his type of mind. The stolid, easy-going man, who usually
advocates the baseline game, does so because he hates to stir up
his torpid mind to think out a safe method of reaching the net.
There is the other type of baseline player, who prefers to remain
on the back of the court while directing an attack intended to
break up your game. He is a very dangerous player, and a deep,
keen- thinking antagonist. He achieves his results by mixing up