Sonnet 49 Against that time, if ever that time come, by William Shakespeare

Against that time, if ever that time come,
When I shall see thee frown on my defects,
When as thy love hath cast his utmost sum,
Call'd to that audit by advised respects;
Against that time when thou shalt strangely pass
And scarcely greet me with that sun thine eye,
When love, converted from the thing it was,
Shall reasons find of settled gravity,--
Against that time do I ensconce me here
Within the knowledge of mine own desert,
And this my hand against myself uprear,
To guard the lawful reasons on thy part:
   To leave poor me thou hast the strength of laws,
   Since why to love I can allege no cause. 

Sonnet 45 The other two, slight air and purging fire, by William Shakespeare

The other two, slight air and purging fire,
Are both with thee, wherever I abide;
The first my thought, the other my desire,
These present-absent with swift motion slide.
For when these quicker elements are gone
In tender embassy of love to thee,
My life, being made of four, with two alone
Sinks down to death, oppress'd with melancholy;
Until life's composition be recured
By those swift messengers return'd from thee,
Who even but now come back again, assured
Of thy fair health, recounting it to me:
   This told, I joy; but then no longer glad,
   I send them back again and straight grow sad.

Sonnet 44 If the dull substance of my flesh were thought, by William Shakespeare

If the dull substance of my flesh were thought,
Injurious distance should not stop my way;
For then despite of space I would be brought,
From limits far remote where thou dost stay.
No matter then although my foot did stand
Upon the farthest earth removed from thee;
For nimble thought can jump both sea and land
As soon as think the place where he would be.
But ah! thought kills me that I am not thought,
To leap large lengths of miles when thou art gone,
But that so much of earth and water wrought
I must attend time's leisure with my moan,
Receiving nought by elements so slow
But heavy tears, badges of either's woe.