Chasidut for Eruvin 82:15

Therefore, even if one is beset by great pains and agonies (may God save all of His people Israel from them and give them only good, salvation, and comfort!), even to the extent where it is said in the Talmud (Eruvin, 41) that suffering can make a person go mad and break ways with God, still, this should not contradict the teaching of the Sages in the Talmud (Rosh Hashanah, 11a) that all creatures were created by their own agreement, and with full knowledge of their form and character. For what is the whole life of this world, “seventy years of hard labor and sorrow,” ⁴⁶¹Tehillim, 90:10 in comparison to the eternal life of the world-to-come? It is truly like a dream before waking reality. Yet even this comparison is made just in order to present an analogy that can be easily understood. For there is no way to compare this world and the eternal world-to-come. Though there is a great difference between a dream and conscious reality, still, dreams exist in time. And even though dreams are for a brief moment in comparison to the passage of time in conscious reality, still, they do occupy a portion of time. This is not so with the ephemeral world in comparison to the eternal world-to-come. One cannot be compared to the other whatsoever, and they have no way of being joined together in any way or part. This is because that which is limited cannot be joined to that which is limitless.