In the following, I share some quotes I find inspiring, in no particular order other than their categories:

Attitude & Action

“If the world seems cold to you, kindle fires and warm it.” — Lucy Larcom
“Always… try to be a little kinder than is necessary.” — J. M. Barrie
“The most worth-while thing is to try to put happiness into the lives of others.” — Robert Baden-Powell

“Work out your own salvation. Do not depend on others.” — Buddha
“You have to make it happen.” — Denis Diderot
“A will finds a way.” — Orison Swett Marden
“The undertaking of a new action brings new strength.” — Richard L. Evans
“It’s always too early to quit.” — Norman Vincent Peale
“Act as if what you do makes a difference. It does.”  — William James
“Start with what is right rather than what is acceptable.” — Franz Kafka
“Be great in act, as you have been in thought.” — Jean Paul
“Be true to your work, your word, and your friend.” — John Boyle O’Reilly
“When your work speaks for itself, don’t interrupt.” — Henry J. Kaiser
“I am prepared for the worst, but hope for the best.” — Benjamin Disraeli
“This is the precept by which I have lived: Prepare for the worst; expect the best; and take what comes.” — Hannah Arendt
“That which does not kill us makes us stronger.” — Friedrich Nietzsche
“It is not fair to ask of others what you are not willing to do yourself.” — Eleanor Roosevelt
“At times I think and at times I am.” — Paul Valery
“Well done is better than well said.” — Benjamin Franklin
“A man should always consider how much he has more than he wants.” — Joseph Addison
“Neither blame or praise yourself.” — Plutarch
“To advise is not to compel.” — Anton Chekhov

Characters

“Our character is what we do when we think no one is looking.” — H. Jackson Brown, Jr.
“Tell me to what you pay attention and I will tell you who you are.” — Jose Ortega y Gasset
“Without wearing any mask we are conscious of, we have a special face for each friend.” — Oliver Wendell Holmes, Sr.
“What happens is not as important as how you react to what happens.” — Ellen Glasgow
“People who know little are usually great talkers, while men who know much say little.” — Jean-Jacques Rousseau

“I like to listen. I have learned a great deal from listening carefully. Most people never listen.” — Ernest Hemingway
“If you have nothing to say, say nothing.” — Mark Twain
“I have noticed that nothing I never said ever did me any harm.” — Calvin Coolidge

“Men can starve from a lack of self-realization as much as they can from a lack of bread.” — Richard Wright
“What the human being is best at doing, is interpreting all new information so that their prior conclusions remain intact.” — Warren Buffett
“Solitude vivifies; isolation kills.” — Joseph Roux

Choice & Freewill

“Freedom is nothing but a chance to be better.” — Albert Camus
“You exist only in what you do.” — Federico Fellini 

Life

“A mind that is stretched by a new experience can never go back to its old dimensions.” — Oliver Wendell Holmes, Jr.
“Experience is one thing you can’t get for nothing.” — Oscar Wilde
“For the happiest life, days should be rigorously planned, nights left open to chance.” — Mignon McLaughin
“We’re meant to lose people we love. How else would we know how important they are to us?” — Curious Case of Benjamin Button
“All of us, at certain moments of our lives, need to take advice and to receive help from other people.” — Alexis Carrel
“The return we reap from generous actions is not always evident.” — Francesco Guicciardini
“To give without any reward, or any notice, has a special quality of its own.” — Anne Morrow Lindbergh

“Wherever you are – be all there.” — Jim Elliot
“Life is but thought.” — Sara Teasdale
“You can never plan the future by the past.”  —  Edmund Burke
“The future has a way of arriving unannounced.” — George Will

“The past is really almost as much a work of the imagination as the future.” — Jessamyn West
“Imagination and fiction make up more than three quarters of our real life.” — Simone Weil
“Man – a being in search of meaning.” — Plato
“And that’s the way it is.” — Walter Cronkite
“Our entire life – consists ultimately in accepting ourselves as we are.” — Jean Anouilh

Education

“I am still learning.” — Michelangelo
“The aim of education is the knowledge not of facts but of values.” — William Ralph Inge

“Education’s purpose is to replace an empty mind with an open one.” — Malcolm Forbes
“Where the senses fail us, reason must step in.” — Galileo Galilei
“Nothing beats books for understanding the world.” — Rolf Dobelli
“To read without reflecting is like eating without digesting.” — Edmund Burke
“Facts do not cease to exist because they are ignored.” — Aldous Huxley

Knowledge & Wisdom

“There is much pleasure to be gained from useless knowledge.” — Bertrand Russell
“Wisdom outweighs any wealth.” — Sophocles
“Knowledge comes, but wisdom lingers.” — Alfred Lord Tennyson

“No man was ever wise by chance.” — Lucius Annaeus Seneca
“Our happiness depends on wisdom all the way.” — Sophocles
“Metaphors have a way of holding the most truth in the least space.” — Orson Scott Card
“If your only tool is a hammer, all your problems will be nails.” — Mark Twain

Imagination & Vision

“Let your mind alone, and see what happens.” — Virgil Thomson
“Reach for the stars.” — Christa McAuliffe

“The possible ranks higher than the actual.” — Martin Heidegger
“Imagination creates reality.” — Richard Wagner

Dreams

“A dream you dream alone is only a dream. A dream you dream together is reality.” — John Lennon
“Ideologies separates us. Dreams and anguish bring us together.” — Eugene Lonescco
“Dreams are necessary to life.” — Anais Nin

Writing

“Words are but the signs of ideas.” — Samuel Johnson
“The art of writing is the art of discovering what you believe.” — Gustave Flaubert
” We try on stories as we try on clothes.” — Max Frisch

Misc.

“Ability has nothing to do with opportunity.” — Napoleon
“In every real man a child is hidden that wants to play.” — Friedrich Nietzsche
“The best argument against democracy is a five-minute conversation with the average voter.” — Winston Churchill
“We have, I fear, confused power with greatness.” — Stewart Udall