"All these causes of disappointment can only be attributed to the lack of
equilibrium of the reasoning power and, above all, to the absence of
common sense, hence we cannot judge of relative values.

"To give a definite course to the plans which we form is to prepare the
happy termination of them.

"This is also the way to banish seductive illusion, the devourer of
beautiful ambitions and youthful aspirations."

And, with his habitual sense of the practical in life, Yoritomo adds the
following:

"There are, however, some imaginations which can not be controlled by the
power of reasoning, and which, in spite of everything, escape toward the
unlimited horizons of the dream.

"It would be in vain to think of shutting them up in the narrow prison
walls of strict reason; they would die wishing to attempt an escape.

"To these we can prescribe the dream under its most august form, that
of science.

"Each inventor has pursued an illusion, but those whose names have lived
to reach our recognition, have caught a glimpse of the vertiginous course
they were following, and no longer have allowed themselves to get too far
away from their base--science.

"Yes, illusion can be beautiful, on condition that it is not constantly