“One changes their beliefs numerous times over the course of a lifetime; even those they defended and supported for years.”
2007
Related quotes

A History of the Lyre
The Venetian Bracelet (1829)

“Beliefs do not change facts. Facts, if one is rational, should change beliefs.”

Quoted from Lal, K. S. (1992). The legacy of Muslim rule in India. New Delhi: Aditya Prakashan. Also quoted in part in in Islam in India and Pakistan - A Religious History by Dr.Y P Singh, British India by R.W. Frazer
Travels in the Mogul Empire (1656-1668)

Source: Catch Me if You Can: The True Story of a Real Fake, 2002, Ch.1 Pg.4(a), Ch.1 Pg. 11(b),Back cover(c), Ch.6 Pg.116(d)

2013, Commencement Address at Ohio State University (May 2013)
Context: I lost my first race for Congress, and look at me now – I’m an honorary graduate of The Ohio State University!
The point is, in your life, you will fail. You will stumble, and you will fall. But that will make you better. You’ll get it right the next time. And that’s not only true for your personal pursuits, but for the broader causes you believe in as well. But don’t give up. Don’t lose heart, or grow cynical. The cynics may be the loudest voices – but they accomplish the least. It’s the silent disruptors – those who do the long, hard, committed work of change – that gradually push this country in the right direction, and make the most lasting difference.
Still, whenever you feel that creeping cynicism; whenever you hear those voices say you can’t make that difference; whenever somebody tells you to set your sights lower – the trajectory of America should give you hope. What young generations have done before you should give you hope. It was young folks like you who marched and mobilized and stood up and sat-in to secure women’s rights, and voting rights, and workers’ rights, and gay rights, often against incredible odds, often over the course of years, sometimes over the tranquil and steady dedication of a lifetime. Even if their rights were already secured, they fought to secure those rights and opportunities for others. What they did should give you hope.
And where we’re going should give you hope. Because while things are still hard for a lot of people, you have every reason to believe that your future is bright.

"A Conversation with Tarık Günersel -by Dawn Kotapish “ in World Literature Today (Jan-Feb 2011).
Other

Tourists in Paris, from Outside: Selected Writings (1984).