Noun
One who holds the opinion that all events are ordered for the best.
One who looks on the bright side of things, or takes hopeful views; -- opposed to pessimist.
Source: Webster's dictionaryA pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty. Winston Churchill
The pessimist complains about the wind; the optimist expects it to change; the realist adjusts the sails. William Arthur Ward
The man who is a pessimist before 48 knows too much; if he is an optimist after it he knows too little. Mark Twain
The devil is an optimist if he thinks he can make people meaner. Karl Kraus
To an optimist every weed is a flower; to a pessimist every flower is a weed. Finnish Proverb
A pessimist is a well-informed optimist. Russian Proverb