"Noah was a righteous man in his generation" (Genesis 6:9). There are those
amongst our sages who interpret this verse as praise: [If he was righteous in
his wicked generation,] how much more so would he have been in a generation of
righteous people. And there are those who interpret
it as a condemnation: In accordance to his generation he was righteous, but if
he would have been in Abraham's generation, he would not be regarded as
anything.
(Rashi on verse)
Everything about Noah can be seen in a positive light, and in a negative
light.
Noah built the famous lifeboat that saved him and seven other humans (his
wife, his three children and their wives) from the Great Flood. So you can
thank him for saving humanity, or you can criticize him (as the Zohar does) for
not saving the rest of his generation.
The Torah tells us that Noah did not enter the ark until the very last
minute, when the rains were already falling. You can laud his optimism, or you
can point out (as Rashi does) that he was a "small believer" in G-d's
words.
The Torah also relates that even after the waters of the Flood had receded
and the earth had dried, Noah still would not leave the ark until G-d expressly
commanded him to. You can call him timid, or you can admire (as do our sages) his
obedience: G-d had commanded him to enter the ark, so in the ark he remained
until G-d told him to come out.
The first thing Noah did to develop the newly barren earth he found upon
emerging from the ark was plant a vineyard, make wine and get drunk. You can be
dismayed by his fickleness, or applaud his determination to infuse some joy and
merriment into a desolate world.
Noah lived 950 years -- enough time to do everything wrong and everything
right.
We are all descendants of Noah. Noah is a descendant of Adam, so we're all sons
of Adam, too. But the term used by the Talmud and halachah (Torah law) for
humanity as a whole is B'nei Noach ("Sons of Noah"). The seven universal laws of
morality that are binding upon every human being (prohibiting idolatry,
blasphemy, murder, theft, adultery and incest, and cruelty to animals, and
mandating the establishment of courts of justice) are called "The
Seven Noachide Laws" -- even though six of them were actually commanded to
Adam.
Adam was the first man. Noah was the first human being.