At the time of being admitted as a member of the medical profession:

I solemnly pledge myself to consecrate my life to the service of humanity;
I will give to my teachers the respect and gratitude which is their due;
I will practice my profession with conscience and dignity; the health of my patient will be my first consideration;
I will maintain by all the means in my power, the honour and the noble traditions of the medical profession; my colleagues will be my brothers;
I will not permit considerations of religion, nationality, race, party politics or social standing to intervene between my duty and my patient;
I will maintain the utmost respect for human life from the time of conception, even under threat;
I will not use my medical knowledge contrary to the laws of humanity;
I make these promises solemnly, freely and upon my honour.

(Geneva Declaration, 1948)

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