To me, photography is an art of observation. It’s about finding something interesting in an ordinary place… I’ve found it has little to do with the things you see and everything to do with the way you see them. — Elliott Erwitt
“Photography for me is not looking, it’s feeling. If you can’t feel what you’re looking at, then you’re never going to get others to feel anything when they look at your pictures.” – Don McCullin
“The best thing about a picture is that it never changes, even when the people in it do.” – Andy Warhol
“Great photography is about depth of feeling, not depth of field.” – Peter Adams
“Your photography is a record of your living,
 for anyone who really sees.” — Paul Strand
George Eastman said... "Light makes photography. Embrace light. Admire it. Love it. But above all, know light. Know it for all you are worth, and you will know the key to photography." An interesting quote given the state of photography today, and the over-the-top pursuit of cameras with good low-light capability.
To succeed as a photographer have clarity about who you are and what you want to say - and what you stand for. Don't chase styles or influencers because you'll probably be disappointed and waste time following something that won't make you happy even if you win.