Quote 1
DUKE SENIOR
Now, my co-mates and brothers in exile,
Hath not old custom made this life more sweet
Than that of painted pomp? Are not these woods
More free from peril than the envious court? (2.1.1-4)
Duke Senior's been exiled, but he makes the most of his new life in Arden. According to the Duke, country life is "more sweet" because it offers safety and freedom from the court, where everybody seems to be two-faced and untrustworthy.
Quote 2
Here feel we not the penalty of Adam,
The seasons' difference, as the icy fang
And churlish chiding of the winter's wind,
Which when it bites and blows upon my body
Even till I shrink with cold, I smile and say
"This is no flattery. These are counselors
That feelingly persuade me what I am." (2.1.5-11)
Even though the weather in Arden is not ideal, Duke Senior says he barely notices the "icy fang" of the "winter's wind." Duke Senior seems genuinely happy out of the court, especially because it was a source of such pain and treachery to him. What's interesting about this passage is how Duke Senior likens the forest to Eden before man's fall. (In Genesis, Adam and Eve are booted out of Eden and the earth is cursed. Like a lot of people, Duke Senior interprets this curse to include lousy weather.)
P.S. Did you notice how the word "Arden" combines the names of Arcadia (an earthly paradise from classical Greek mythology) and Eden (the Biblical paradise)?
Quote 3
DUKE SENIOR
Welcome, young man.
Thou offer'st fairly to thy brothers' wedding:
To one his lands withheld, and to the other
A land itself at large, a potent dukedom. (5.4.172-175)
As Duke Senior welcomes Jaques de Boys to Orlando and Rosalind's wedding, it becomes clear that marriage saves the day in a play characterized by family treachery. As we know, younger brother Orlando has received the short end of the stick—after his father died, his older brother inherited everything and treated him like garbage. Still, when Orlando gets hitched to Rosalind, his nuptials provide him with a new family and a new fortune. Not only does Orlando get to marry his dream girl, he also gains a father-in-law (Duke Senior) who replaces, to some extent, his own dead father, Rowland de Boys. What's more, Orlando is now the heir to his new father-in-law's dukedom.