"There was a moment when I changed from an amateur to a professional. I assumed the burden of a profession, which is to write even when you don't want to, don't much like what you're writing, and aren't writing particularly well." ― Agatha Christie, An Autobiography
"The professional has learned that success, like happiness, comes as a by-product of work. The professional concentrates on the work and allows rewards to come or not come, whatever they like." ― Steven Pressfield, The War of Art: Break Through the Blocks & Win Your Inner Creative Battles
"He was a volatile mixture of confidence and vulnerability. He could deliver extended monologues on professional matters, then promptly stop in his tracks to peer inquisitively into his guest's eyes for signs of boredom or mockery, being intelligent enough to be unable fully to believe in his own claims to significance. He might, in a past life, have been a particularly canny and sharp-tongued royal advisor." - Alain de Botton, The Pleasures and Sorrows of Work
"Professionalism shouldn't be defined by a persons paycheck, role or title. It should be defined by a persons work ethic" ― Janna Cachola
"Since you cannot always carry and display your diploma. Kindly act like you have one. Professionalism. Include that to your dictionary." - Joshua De Vera Bautista
"A powerful process automatically takes care of progress, productivity and profits." ― Edward Berard
"The older you get the more you realize that just because someone has an important job doesn't necessarily mean that they do it responsibly, or are even good at it. There are many 'D' students running around with high social status gained from their seemingly important positions. Integrity and proficiency are not a given. These qualities can only be proven over time." ― Gary Hopkins