Then the safe gate securely pass'd,
You'll reach the lane of certainty at last.

STUDENT

But then some meaning must the words convey.

MEPHISTOPHELES

Right! But o'er-anxious thought, you'll find of no avail,
For there precisely where ideas fail,
A word comes opportunely into play
Most admirable weapons words are found,
On words a system we securely ground,
In words we can conveniently believe,
Nor of a single jot can we a word bereave.

STUDENT

Your pardon for my importunity;
Yet once more must I trouble you:
On medicine, I'll thank you to supply
A pregnant utterance or two!
Three years! how brief the appointed tide!
The field, heaven knows, is all too wide!
If but a friendly hint be thrown,
'Tis easier then to feel one's way.

MEPHISTOPHELES (aside)