...that we may see The Father and the Son by Thee.

 Veni Creator Stanza 6

Oh, may Thy grace on us bestow
the Father and the Son to know;
and Thee, through endless times confessed,
of both the eternal Spirit blest.

Other versions: 

Teach us to know the Father,
Son,and thee, of both, to be but One,
that through the ages all along,
this may be our endless song:

May we by thee the Father learn,
and know the Son, and thee discern,
who art of both; and thus adore
in perfect faith for evermore.
Robert Bridges

Make Thou to us the Father known,
Teach us the eternal Son to won
And Thee, whose name we ever bless,
Of both the Spirit, to confess.
Edward Caswall'

John Dryden's rather more ornate version, from 1693:

Create all new; our wills control,
Subdue the rebel in our soul;
Make us eternal truths receive,
And practice all that we believe;
Give us Thyself, that we may see
The Father and the Son by Thee.

                                      
                                             http://saints365.blogspot.in/2014/05/7-lessons-from-fr-raniero-cantalamessa.html
http://alisonmorgan.co.uk/Cantalamessa%2003.htm

20. Through you may we the Father know

The HS leads us to know God as the Father of his son Jesus Christ.

The best way to judge a theology of the Spirit is to ask, is it open or closed to a Trinitarian perspective?

The first thing the HS does in us is to make us see God in a different way. He leads us to discover:

• God is on our side
• God is suffering too

What should we ask of the Spirit – that he should make us know the Father’s love.

21. Through you may we know the Son as well

The HS in scripture never puts himself forward proclaiming his own name; he’s always telling of the Father or of the Son. The Holy Spirit is God behind the scenes, 353.

There is no need for new theologies of the Spirit; if we lack the support of a lived experience of the Spirit (as they had in the C4th when the theology of the HS was first developed) then we won’t be able to write about him.

Charismatic movement – reveals that Jesus is Lord above all else. Demons called Jesus ‘Son of God’ or ‘Holy One of God’ – but never ‘Lord’.

Simeon the New Theologian was a great poet of the HS. He said, if a rich man gave a penny to a beggar and the beggar ran off to tell all the others so that they too came crowding to the rich man clamouring for a penny, the rich man would surely be irritated – but the Lord would be irritated if the beggar did not run off and tell all the others, so that they too should come to receive from him.

22. And you, the Spirit of them both, may we always believe

381 filioque controversy. Questions asked which are answered in the definition ‘the HS who is Lord and giver of life, who proceeds from the Father and with the Father and theSon is adored and glorified, and who has spoken through the prophets’:

• Who is the HS? – Lord, who proceeds from the Father and is to be adored as Father and Son are adored
• What does he do? – gives life

Irenaeus – the Father anoints, the Son is anointed, and the HS is the anointing.