O, man!
The strangest state the All-Wise Creator has included in your nature is your inability to settle in the whole world; like someone suffocating in prison, you gasp for somewhere wider than the world. Yet you enter the minutest matter, a memory, a moment, and settle in it. Your heart and mind which cannot settle in the vast world settle in that jot. You wander about with your intensest emotions in that brief moment, that tiny memory.
And He lodged in your nature such immaterial powers and subtle faculties that if some of them devoured the world, they would not be satisfied; and some of them cannot sustain even a minute particle within themselves. Like the eye cannot bear a hair although the head can bear heavy stones, those faculties cannot bear the weight of even a hair, that is, some insignificant state arising from heedlessness and misguidance. They are sometimes extinguished and die even.
Since it is thus, be careful, tread with caution, be frightened of sinking! Do not drown in a mouthful, a word, a seed, a flash, a sign, a kiss! Do not plunge your extensive faculties, which can swallow the world, in such a thing.
For there are things that are very small that can in one respect swallow things that are very large. The sky together with its stars can enter a small fragment of glass and be drowned. And most of the pages of your actions and leaves of your life enter your faculty of memory, tiny as a mustard seed. So too there are tiny things that swallow things thus large and contain them.
From Risale-i Nur Collection By Master Said Nursi
