A summary of Wiesel's Nobel Peace Prize acceptance speech in just three sentences is tough—even more so when asked to avoid providing specific details. Below you'll find an example of one way you could fulfill this assignment, although these sentences might be a little more crowded than would be ideal. Be sure to aim for clarity and conciseness when you write your own summary.
In terms of his arrangement of ideas, Wiesel starts by commemorating all the victims of the Holocaust, on whose behalf he accepts the award, before recounting a little of his own personal experience, commenting on the importance of remembering the past and calling attention to contemporary examples of injustice and then, finally, calling upon people to keep fighting for justice. In broad terms, Wiesel begins with personal thoughts and reflections before broadening out to general principles and global examples. Wiesel's main arguments are that remembering atrocities is the best way to heal wounds and prevent future atrocities and that the individual can make a huge difference if they stand up for what is right, rather than allowing injustice and prejudice to go unchallenged.