Key quotes from Day 1 of the Democratic party convention

Day one of the Democratic National Convention in Philadelphia on Monday was marked by party infighting, an impassioned endorsement of Hillary Clinton from First Lady Michelle Obama and a call for unity from Bernie Sanders.

Here are some key quotes from the event's opening day:

Clear choice

"Any objective observer will conclude that – based on her ideas and her leadership – Hillary Clinton must become the next president of the United States. (...) I am proud to stand with her tonight."

– Senator Bernie Sanders, Clinton's onetime campaign rival

Breaking the glass ceiling

"Because of Hillary Clinton, my daughters and all of our sons and daughters now take for granted that a woman can be president of the United States."

– First Lady Michelle Obama, emotionally making the case for Clinton

Trump: the art of the speech

"Last week, Donald Trump spoke for more than an hour on the biggest stage he's ever had, but other than talking about building a stupid wall, which will never get built – other than that wall, did you hear any actual ideas?"

– Senator Elizabeth Warren, a liberal firebrand

America is already great

"Don't let anyone ever tell you that this country isn't great, that somehow we need to make it great again, because this right now is the greatest country on Earth."

– Michelle Obama

Real solutions

"This election is about which candidate understands the real problems facing this country and has offered real solutions –- not just bombast, not just fear-mongering, not just name-calling and divisiveness."

– Bernie Sanders

Criminals and rapists? No.

"When Donald Trump calls us criminals and rapists, he's insulting American families. My father isn't a criminal or a rapist. In fact, he's a United States veteran."

– actress Eva Longoria, who is Mexican-American

Feeling the Bern? Get over it

"To the 'Bernie or bust' people, you're being ridiculous."

– comedian Sarah Silverman, a Sanders supporter shifting gears to back Clinton and urging Sanders diehards to join her

Studying at Trump U

"I got my doctorate in megalomania studies from Trump University."

– Senator Al Franken, a former star and writer for "Saturday Night Live," bringing a bit of biting levity to the proceedings

Trump rebuttal

"Bernie Sanders totally sold out to Crooked Hillary Clinton. All of that work, energy and money, and nothing to show for it! Waste of time."

– Republican presidential nominee Donald Trump, on Twitter