To honor the memory of Martin Luther King Jr.,  here are 5 quotes to inspire you on MLK Day 2015.

(Photo by Keystone/Getty Images)

 

 

Life's most persistent and urgent question is, 'What are you doing for others?'

 

Martin Luther King and Malcolm X waiting for press conference. (1964 Photo Via WikiCommons)

Our lives begin to end the day we become silent about things that matter.

 

President Lyndon B. Johnson signs the 1964 Civil Rights Act as Martin Luther King, Jr., and others, look on. (1964 Photo via WikiCommons)

 

 

The hottest place in Hell is reserved for those who remain neutral in times of great moral conflict.

 

 

Martin Luther King leaning on a lectern. (1964 Photo via WikiCommons)

 

The ultimate measure of a man is not where he stands in moments of comfort and convenience, but where he stands at times of challenge and controversy.

 

 

President Lyndon B. Johnson meets with Civil Rights leaders Martin Luther King, Jr., Whitney Young, James Farmer (1964 Photo via WikiCommons)

 

In the End, we will remember not the words of our enemies, but the silence of our friends.

 

These Martin Luther King Jr. quotes and many others are all courtesy of MLKDAY.gov

You can watch Martin Luther King Jr.'s iconic 'I Have a Dream Speech' below.