Flight of Thought--by Rav Avraham Yitzchak Kook

Sometimes
A person’s flight of thought grows so strong
That it rises up beyond all measured logic,
Certainly beyond every set, this-worldly law.

His heart yearns to fly upward,
And he cannot by any means
Constrict his spirit into measured learning.

He should set his spirit free,
Soar wherever he wishes,
Seek God wherever he is taken by his soul,
Which hovers over the many streams of water.

If at that time
He turns to any practical learning,
He cannot delve into it deeply,
Because his spirit is soaring far.
But at any rate he can learn,
If his spirit will take him,
Superficially,
Where quickness of thought will carry him on its wing.
He will gulp down whatever ideas he finds
And they will blend together into a significant amount.

A spirit like that cannot be summed up in order and pulse.
It cannot be weighed down with measured precision.
But its measure will be in a person finding for himself
The comfortable possibility to come to terms 
With practical reality and the state of his life,
Which demands its needs
And cannot give them up completely,
Even when faced with the highest demands
Of heavenly spirit.

Shemonah Kevatzim 1:151