Letters 201 



illustration. But it is in vain that you apply the spur 

 to urge me, at my present age, not mature merely but 

 declining, to gird myself for any new investigation. 

 For I now consider myself entitled to my discharge 

 from duty. It will, however, always be a pleasant sight 

 for me to see distinguished men like yourself engaged 

 in this honorable arena. Farewell, most learned sir, 

 and whatever you do, still love 



Yours, most respectfully, 



WILLIAM HARVEY. 



London, 24th April, 1657. 



