It is not usually our ideas that make us optimists or pessimists, but it is our optimism or pessimism that makes our ideas. - Miguel de Unamuno
Pessimists are usually right and optimists are usually wrong but all the great changes have been accomplished by optimists. - Thomas L. Friedman
Pessimists never go on a voyage of discovery, equally so they never leave the shoreline in search of new horizons. - Stephen Richards
My pessimism extends to the point of even suspecting the sincerity of other pessimists. - Jean Rostand
Borrow money from pessimists - they don't expect it back.
How many pessimists end up by desiring the things they fear, in order to prove that they are right?
Traditionalists are pessimists about the future and optimists about the past. - Lewis Mumford
The Present day optimists invent a lieand the pessimists hide the truth - irrfan ishaq
My pessimism extends to the point of even suspecting the sincerity of the pessimists. - Jean Rostand
pessimists see people as liabilities to manage, as burdens or threats that we must minimize. - Arthur C. Brooks
We are optimists by instinct, pessimists by thought. - Marty Rubin
[...] be unaffected by naysayers. Let not your desire or determination be wavered by the censure of cynics, the criticism of pessimists, the undermining of those that belittle, the jeering of the mockers, or the doubts of the skeptics. - Habib Umar