Letters 54.6

I have never ceased to encourage myself with cheering counsels of this kind, silently, of course, since I had not the power to speak; then little by little this shortness of breath, already reduced to a sort of panting, came on at greater intervals, and then slowed down and finally stopped. Even by this time, although the gasping has ceased, the breath does not come and go normally; I still feel a sort of hesitation and delay in breathing. Let it be as it pleases, provided there be no sigh from the soul.

Seneca, Letters to Lucilius 54.6, translated by Richard Mott Gummere