“Talk to him of Jacob's ladder, and he would ask the number of the steps.”

One of Their Gods http://www.cavafy.com/poems/content.asp?id=40&cat=1
Collected Poems (1992)
Context: The people going by would gaze at him,
and one would ask the other if he knew him,
if he was a Greek from Syria, or a stranger.
But some who looked more carefully
would understand and step aside;
and as he disappeared under the arcades,
among the shadows and the evening lights,
going toward the quarter that lives
only at night, with orgies and debauchery,
with every kind of intoxication and desire,
they would wonder which of Them it could be,
and for what suspicious pleasure
he had come down into the streets of Selefkia
from the August Celestial Mansions.

St. 5.
The Kingdom of God http://www.bartleby.com/236/245.html (1913)

Source: On the Study and Difficulties of Mathematics (1831), Ch. I.

The Death of Harrison.
Bartlett's Familiar Quotations (1919)

Another [Epitaph] of the Same (1586), line 20

Source: I Am the Messenger

Sec. 95
Some Thoughts Concerning Education (1693)
Context: A father would do well, as his son grows up, and is capable of it, to talk familiarly with him; nay, ask his advice, and consult with him about those things wherein he has any knowledge or understanding. By this, the father will gain two things, both of great moment. The sooner you treat him as a man, the sooner he will begin to be one; and if you admit him into serious discourses sometimes with you, you will insensibly raise his mind above the usual amusements of youth, and those trifling occupations which it is commonly wasted in. For it is easy to observe, that many young men continue longer in thought and conversation of school-boys than otherwise they would, because their parents keep them at that distance, and in that low rank, by all their carriage to them.

Source: Kitchen

Source: Maybe This Time