Defeat is a state of mind. You are defeated only when you accept defeat, and assume the hopeless mindset of a defeated person.

Far better it is to dare might things, to win glorious triumphs, even though checkered by failure, than to take rank with those poor spirits who neither enjoy much nor suffer much, because they in the gray twilight that knows nor victory nor defeat.

Defeat doesn't finish a man, quit does. A man is not finished when he's defeated. He's finished when he quits.

Not in the clamor of the crowded street, not in the shouts and plaudits of the throng, but in ourselves, are triumph and defeat.

Victory is sweetest when you've known defeat.

You may encounter many defeats, but you must not be defeated. In fact, it may be necessary to encounter the defeats, so you can know who you are, what you can rise from, how you can still come out of it.