Dear Sri Ranganathan !
Only in sleep, that too when there are no dreams , that is in Shushupti, one can be without desire.
In one discourse Swami Dayananda Saraswathi says one should aim for mastery over desire , as long as one control the desire and not the desire control the person he is safe. I think this is much more practical approach.
If not, everytime one entertains a desire , then he will develop a guilt-consciousness thinking that elders didn't approve desire etc.., So proper desires are good, if that too is under one's complete control then he is really the blessed one.
But I do respect your quotations from Saint Thirumular only thing is I couldn't reconcile with what is said.
vanakathudan
malgova.mango