When Fortune comes, seize her in front with a sure hand, because behind she is bald.
Old age takes in part savoury wisdom for its food - see to that your old age will not lack in nourishment.
The natural desire of good men is knowledge.
Obstacles cannot bend me. Every obstacle yields to effort.
Even the richest soil, if left uncultivated will produce the rankest weeds.
Perspective is a most subtle discovery in mathematical studies, for by means of lines it causes to appear distant that which is near, and large that which is small.