When doing everything according to indications, although things may not turn out agreeably to indication, we should not change to another while the original appearances remain.
HippocratesThrough seven figures come sensations for a man; there is hearing for sounds, sight for the visible, nostril for smell, tongue for pleasant or unpleasant tastes, mouth for speech, body for touch, passages outwards and inwards for hot or cold breath. Through these come knowledge or lack of it.
Hippocrates