There is the heat of Love,
the pulsing rush of Longing, the lover’s whisper,
irresistible — magic to make the sanest man go mad.

[Ἔνθ’ ἔνι μὲν φιλότης, ἐν δ’ ἵμερος, ἐν δ’ ὀαριστὺς
πάρφασις, ἥ τ’ ἔκλεψε νόον πύκα περ φρονεόντων.]

Homer (fl. 7th-8th C. BC) Greek author

The Iliad [Ἰλιάς], Book 14, l. 216ff (14.216) (c. 750 BC) [tr. Fagles (1990), l. 259ff]
    (Source)

Referring to Venus' girdle (cestus). Original Greek. Alternate translations:

In whose sphere
Were all enticements to delight, all loves, all longings were,
Kind conference, fair speech, whose pow’r the wisest doth inflame.
[tr. Chapman (1611), l. 181ff]

In this was every art, and every charm,
To win the wisest, and the coldest warm:
Fond love, the gentle vow, the gay desire,
The kind deceit, the still reviving fire,
Persuasive speech, and more persuasive sighs,
Silence that spoke, and eloquence of eyes.
[tr. Pope (1715-20)]

It was an ambush of sweet snares, replete
With love, desire, soft intercourse of hearts,
And music of resistless whisper’d sounds
That from the wisest steal their best resolves
[tr. Cowper (1791), l. 256ff]

In it were love, and desire, converse, seductive speech, which steals away the mind even of the very prudent.
[tr. Buckley (1860)]

There Love, there young Desire,
There fond Discourse, and there Persuasion dwelt,
Which oft enthralls the mind of wisest men.
[tr. Derby (1864)]

Therein are love, and desire, and loving converse, that steals the wits even of the wise.
[tr. Leaf/Lang/Myers (1891)]

Love, desire, and that sweet flattery which steals the judgement even of the most prudent.
[tr. Butler (1898)]

Therein is love, therein desire, therein dalliance -- beguilement that steals the wits even of the wise.
[tr. Murray (1924)]

Allurement of the eyes, hunger of longing, and the touch of lips that steals all wisdom from the coolest men.
[tr. Fitzgerald (1974)]

There upon it is affection, upon it desire and seductive dalliance with robs even a sensible person of wisdom.
[tr. Merrill (2007)]