Sunter had the right chords but didn't have all the verses, so here's a version 
with all of the words. This song sounds better with two singers, so I've put the 
second singer's lyrics in parentheses.

INTRO

A   C#m    D      E      A    F#m    E

VERSE 1
                A
I thought I was smart
                 C#m
I thought I was right
             D             E          
I thought it better not to fight
                      A         F#m          E
I thought there was a virtue in always being cool
           A            C#m   
So when it came time to fight
            D           E
I thought I'd just step aside
         A                    F#m       E                A
And that time would prove you wrong and you would be the fool
                                                    (I don't know)   

CHORUS
             C#m               D            E
Where the sun beams  and the star lights begin
           A     F#m    E  
It's all a mystery

VERSE 2
A                   C#m
Oh to fight is to defend 
             D
And if it's not
              E                 A                    F#m              E
Then tell me when would be the time that you would stand up and be a man
         A            C#m            D
For to lose I could accept but to surrender
         E                       A            
I just wept and regretted this moment 
F#m     E
Oh that I 
           A
I was the fool
(I don't know)

CHORUS
           C#m                  D            E
Where the sun beams and the star lights begin
             A     F#m    E  
It's all a mystery
              A        C#m                  D                 E
And I don't know how a man decides what's right for his own life
                A     F#m    E  
It's all a mystery.

VERSE 3
              A           C#m
'Cause I'm a man- not a boy
                 D                 E
And there are things you can't afford
                   A
You have to face them
             F#m                   E
When you're not prepared to face them
           A       C#m
And if I could I would
                 D               E
But you're with him I'll do no good 
                  A
I should have fought him,
        F#m           E
But instead I let him
             A
Let him take you
(I don't know)

CHORUS
           C#m                  D            E
Where the sun beams and the star lights begin
            A     F#m    E  
It's all a mystery
              A        C#m                  D                 E
And I don't know how a man decides what's right for his own life
                A     F#m    E  
It's all a mystery.

A   C#m    D     E     A    F#m   E

CHORUS
A                      C#m                 D             E
I don't know where the sun beams and the star lights begin
             A      
It's all a mystery
              F#m              E
(That you'd stand up and be a man)
              A        C#m                  D                 E
And I don't know how a man decides what's right for his own life
                A  
It's all a mystery.
              F#m             E
(When you're not prepared to face them)
A                      C#m                 D             E
I don't know where the sun beams and the star lights begin
             A      
It's all a mystery
           F#m               E
(But instead I let them take you)
A        F#m            E
                     Mystery