...infirmity alone makes us take notice and learn, and enables us to analyse mechanisms of which otherwise we should know nothing. A man who falls straight into bed night after night, and ceases to live until the moment when he wakes and rises, will surely never dream of making, I don't say great discoveries, but even minor observations about sleep. He scarcely knows that he is asleep. A little insomnia is not without its value in making us appreciate sleep, in throwing a ray of light upon that darkness. An unfailing memory is not a very powerful incentive to the study of the phenomena of memory.

A little insomnia is not without its value in making us appreciate sleep, in throwing a ray of light upon that darkness.

I have always been amazed at the way an ordinary observer lends so much more credence and attaches so much more importance to waking events than to those occurring in dreams. It is because man, when he ceases to sleep, is above all the plaything of his memory, and in its normal state memory takes pleasure in weakly retracing for him the circumstances of the dream, in stripping it of any real importance, and in dismissing the only determinant from the point where he thinks he has left it a few hours before: this firm hope, this concern. He is under the impression of continuing something that is worthwhile. Thus the dream finds itself reduced to a mere parenthesis, as is the night. And, like the night, dreams generally contribute little to furthering our understanding. This curious state of affairs seems to me to call for certain reflections.

Of all the things a man may do, sleep probably contributes most to keeping him sane. It puts brackets about each day. If you do something foolish or painful today, you get irritated if somebody mentions it, today. If it happened yesterday, though, you can nod or chuckle, as the case may be. You've crossed through nothingness or dream to another island in Time.

O sleepers! what a thing is slumber! Sleep resembles death. Ah, why then dost thou not work in such wise as that after death thou mayst retain a resemblance to perfect life, when, during life, thou art in sleep so like to the hapless dead?

Regarding sleep, this sinister adventure of each night, one could say that people fall asleep daily with an audacity that would be incomprehensible if we didn't know that it results from their being oblivious of danger.

What was sleep? A blessing, a respite from life, an echo of death, a demanding nuisance?

Sleep is the interest we have to pay on the capital which is called in at death. The higher the interest rate and the more regularly it is paid, the further the date of redemption is postponed

Do but consider what an excellent thing sleep is: it is so inestimable a jewel that, if a tyrant would give his crown for an hour's slumber, it cannot be bought; of so beautiful a shape is it, that though a man lie with an Empress, his heart cannot beat quite till he leaves her embracements to be at rest with the other; yea, so greatly indebted are we to this kinsman of death, that we owe the better tributary, half of our life to him: and there is good cause why we should do so: for sleep is that golden chain that ties health and our bodies together. Who complains of want? of wounds? of cares? of great men's oppressions? of captivity? whilst he sleepeth? Beggars in their beds take as much pleasure as kings: can we therefore surfeit on this delicate Ambrosia? Can we drink too much of that whereof to taste too little tumbles us into a churchyard, and to use it but indifferently throws us into Bedlam? No, no, look upon Endymion, the moon's minion, who slept three score and fifteen years, and was not a hair the worse for it.

By helping us keep the world in perspective, sleep gives us a chance to refocus on the essence of who we are. And in that place of connection, it is easier for the fears and concerns of the world to drop away.

I find out a lot about myself by sleeping. Dreams, they are who I am when I’m too tired to be me.

Man has to awaken to wonder - and so perhaps do peoples. Science is a way of sending him to sleep again.

I know only one thing. when i sleep, i know no fear, no, trouble no bliss. blessing on him who invented sleep. the common coin that purchases all things, the balance that levels shepherd and king, fool and wise man. there is only one bad thing about sound sleep. they say it closely resembles death.

Sleep is the interest we have to pay on the capital which is called in at death; and the higher the rate of interest and the more regularly it is paid, the further the date of redemption is postponed.