Letters 109.7

You might as well, on that basis, say that sweetness is not in the honey: for it is the person himself who is to eat it, that is so equipped, as to tongue and palate, for tasting this kind of food that the special flavour appeals to him, and anything else displeases. For there are certain men so affected by disease that they regard honey as bitter. Both men should be in good health, that the one may be helpful and the other a proper subject for help.

Seneca, Letters to Lucilius 109.7, translated by Richard Mott Gummere