The following quote is from the book Sell & Sell Short by Dr. Alexander Elder.

"Each speculator must identify and do his/her own thing. Perhaps more importantly, they must stay out of someone else's game. The market will tell its own story ,and your only task is to hear it fast."

From Pit Bull by Martin (buzzy) Schwartz

"Even failure was better than doing nothing"

"I would rather fail trying than not to try at all"

Adriano Moraes (Professional Bull Rider)

"Far better it is to dare mighty 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 live in the gray twilight that knows no victory nor defeat"

Theodore Roosevelt, 1899

Wisdom is found in a multitude of councilors

Proverbs

"Tomorrow is going to be wonderful, because i have no idea whats going on today!" Neils Bohr, Atomic Physicist

No try! do or do not!
Yoda :)

"A is A"
Ayn Rand

"No one is so eager to gain new experience as one who doesn't know how to make use of old ones." Marie Ebner von Eschenbach

"If the only tool you have is a hammer, you tend to see every problem as a nail"
(Anonymous)

"Not to take what Heaven gives
Is to incur Heaven's calamity;
Not to act when the moment comes
Is to incur Heaven's misfortune."

-from a Zen anthology

Losses are necessary, as long as they are associated with a technique to help you learn from them