“A man of courage does not tremble in the hour of danger. He is not embarrassed and bewildered. He does not sink down. He is not overwhelmed by despair.. He smiles away all dangers and difficulties, blows the trumpet of triumph and attains victory in the end.”

Source: The Autobiography of Eleanor Roosevelt

1964 Memorial Edition, p. 266 http://www.jfklibrary.org/Research/Research-Aids/Ready-Reference/JFK-Quotations/Profiles-in-Courage-quotations.aspx
Variant: A man does what he must — in spite of personal consequences, in spite of obstacles and dangers and pressures — and that is the basis of all human morality.
Source: Pre-1960, Profiles in Courage (1956)
Context: The courage of life is often a less dramatic spectacle than the courage of a final moment; but it is no less a magnificent mixture of triumph and tragedy. A man does what he must — in spite of personal consequences, in spite of obstacles and dangers, and pressures — and that is the basis of all human morality. In whatever area in life one may meet the challenges of courage, whatever may be the sacrifices he faces if he follows his conscience — the loss of his friends, his fortune, his contentment, even the esteem of his fellow men — each man must decide for himself the course he will follow. The stories of past courage can define that ingredient — they can teach, they can offer hope, they can provide inspiration. But they cannot supply courage itself. For this each man must look into his own soul.
Context: For without belittling the courage with which men have died, we should not forget those acts of courage with which men — such as the subjects of this book — have lived. The courage of life is often a less dramatic spectacle than the courage of a final moment; but it is no less a magnificent mixture of triumph and tragedy. A man does what he must — in spite of personal consequences, in spite of obstacles and dangers, and pressures — and that is the basis of all human morality. In whatever area in life one may meet the challenges of courage, whatever may be the sacrifices he faces if he follows his conscience — the loss of his friends, his fortune, his contentment, even the esteem of his fellow men — each man must decide for himself the course he will follow. The stories of past courage can define that ingredient — they can teach, they can offer hope, they can provide inspiration. But they cannot supply courage itself. For this each man must look into his own soul.

From the poem Bima At-Taʿallulu http://www.almotanabbi.com/poemPage.do?poemId=272

The Analects, Chapter I, Other chapters
Context: The superior man, when resting in safety, does not forget that danger may come. When in a state of security he does not forget the possibility of ruin. When all is orderly, he does not forget that disorder may come. Thus his person is not endangered, and his States and all their clans are preserved.

Sec. 115
Some Thoughts Concerning Education (1693)

Weggefährten - Erinnerungen und Reflexionen, Siedler-Verlag Berlin 1996, S. 156, ISBN 9783442755158, ISBN 978-3442755158

of Islam
Khwand Amir: Qanun-i Humayuni, M. Hidayat Hosain ed., Calcutta 1940. Cited in Harsh Narain, The Ayodhya Temple Mosque Dispute: Focus on Muslim Sources, p. 66-67

Source: Walden