The dose makes the poison.
Paracelsus

Once a disease has entered the body, all parts which are healthy must fight it: not one alone, but all. Because a disease might mean their common death. Nature knows this; and Nature attacks the disease with whatever help she can muster.
Paracelsus

However, anyone to whom this happens should not leave his room upon awakening, should speak to no-one, but remain alone and sober until everything comes back to him, and he recalls the dream.
Paracelsus

The dreams which reveal the supernatural are promises and messages that God sends us directly: they are nothing but His angels, His ministering spirits , who usually appear to us when we are in a great predicament.
Paracelsus

Poison is in everything, and no thing is without poison. The dosage makes it either a poison or a remedy.
Paracelsus

If we want to make a statement about a man's nature on the basis of his physiognomy, we must take everything into account; it is in his distress that a man is tested, for then his nature is revealed.
Paracelsus

Medicine is not only a science; it is also an art. It does not consist of compounding pills and plasters; it deals with the very processes of life, which must be understood before they may be guided.
Paracelsus