Rabbi Dovid Yisroel Ber Kaufmann zt”l (Reflections of Redemption) would say: “'בשנת שש מאות שנה לחיי נח ... נבקעו כל מעינות תהום רבה' - “In the six hundredth year of Noach’s life ... all the wellsprings of the great deep burst forth and the windows of heaven opened.” The Zohar, the fundamental work of Jewish mysticism, explains the esoteric meaning of the posuk as follows: In the six hundredth year of the sixth millennium the gates of wisdom above and wellsprings of widsom below will be opened; the world will then be prepared to enter the seventh millennium.”
A Wise Man would say:
“The friend in my adversity I shall always cherish most. For I can better trust those who helped to relieve the gloom of my dark hours than those who are so ready to enjoy with me the sunshine of my prosperity.”