The best-known recording of this song is the Art Garfunkel version; this tab is 
transcribed from a combination of the acoustic version Jimmy Webb recorded with 
Linda Ronstadt and the Five for Fighting version from the "Chicken Little" 
soundtrack. 

A couple things:

1. Watch out for the third verse -- the chords are slightly different than the first two.

2. YMMV, but I think the bridge sounds best using the following chord variations:

    G   Bm7   Cmaj7   D7sus4   D   Gadd9   G/D   B7/D#   Em   Am7   Am7/D 
e|  3    7      3       5      5     5      3      5     7     5      5
B|  0    7      5       8      7     3      3      4     8     5      5
G|  0    7      4       5      7     4      4      4     9     5      5
D|  0    7      5       5      7     5      5      4     9     5      5
A|  2    9      3       5      5     x      5      6     7     7      5
E|  3    7      x       x      x     x      x      x     x     5      x

INTRO
G   D    Em   |D7sus4 D7   G    C/E|G  G/B  Cadd9     |
D7sus4  D7   G|Gadd9 D/A  Cadd9/A G|Cmaj7   Dsus4   D |
Cadd9   G/D   |C           D    C/E|G              Am7|

VERSE 1
G  D      Em   D7sus4 D7     Gadd9
 I bruise you,    you bruise me.
G   G/B  C      G/B  Dsus4 D   G
 We both bruise too  eas - i - ly,
    D   G C     Dsus4  D      Cadd9
Too eas-i-ly to let    it show.
G/B     Am/D
 I love you, and that's
Cmaj7  D7  G   D/C  C  G  D/C  C  
All    I   know.

VERSE 2
G    D  Em   D7sus4 D7     Gadd9
 All my plans  have fallen through.
G   G/B  C    G/B Dsus4 D   G
All my   plans  depend  on you,
  D    G  C      Dsus4  D        Cadd9
Depend on you to help   them grow.
G/B     Am/D
 I love you, and that's
Cmaj7  D7  G   D/C  C 
All    I   know.

BRIDGE 
G         Bm7      Cmaj7         D7sus4  D  Gadd9
 When the singer's gone, let the song    go on.
       Cmaj7  G/D              B7/D#            Em
It's a fine   line between the darkness and the dawn.
      Cmaj7    G/D             Am7          Am7/D  D7sus4   
In the darkest night there's a light beyond.

VERSE 3
        G  D   Em    Dsus4     G       
But the ending always comes at last,
   G/B  C      Dsus4  D   G
Endings always come   too fast.
     D    G   C              Am7/D  D   Cadd9
They come too fast, but they pass   too slow.
G/D     Am7/D          B7sus4  B7
 I love you and that's all, 
            Em  D C
It's really all I know.
          D  G   Bm7  Cmaj7  Am7/D
It's all I  know,
           Em  Bm/D  Cadd9  D7sus4
It's all I know,
           G  D  Em   Dsus4  D7  Gadd9  C/E
It's all I know.

OUTRO
Gadd9  G/B  C   |G/D  D7  G