“I'm a pessimist because of intelligence, but an optimist because of will”
Antonio Gramsci
“Pessimism of the spirit; optimism of the will.”
“An optimist is a person who sees a green light everywhere, while a pessimist sees only the red stoplight. . . The truly wise person is colorblind.”
Albert Schweitzer
“The man who is a pessimist before forty-eight knows too much; if he is an optimist after it he knows too little”
Mark Twain
“A pessimist only sees the dark side of the clouds, and mopes; a philosopher sees both sides and shrugs; an optimist doesn't see the clouds at all--he's walking on them.”
Leonard L. Levinson
“Pessimism leads to weakness, optimism to power”
William James
“The optimist sees the rose and not its thorns; the pessimist stares at the thorns, oblivious to the rose”
Kahlil Gibran