Every leaf, every flower, every crystal, every atom even, has a purpose stamped upon it which unmistakably points to the crowning summit of all creation--man.
Young men are often told to aim high, but we must aim at what we would hit.

A general purpose is not enough.

The arrow shot from the bow does not wander around to see what it can hit on its way, but flies straight to the mark.

The magnetic needle does not point to all the lights in the heavens to see which it likes best.

They all attract it.
The sun dazzles, the meteor beckons, the stars twinkle to it, and try to win its affections; but the needle, true to its instinct, and with a finger that never errs in sunshine or in storm, points steadily to the North Star; for, while all the other stars must course with untiring tread around their great centers through all the ages, the North Star, alone, distant beyond human comprehension, moves with stately sweep on its circuit of more than 25,000 years, for all practical purposes of man stationary, not only for a day, but for a century.