Perseverance and audacity generally win.

He knew that she took life as it came, opposed her tough-fibered mind to whatever obstacles there might be, fought on with a determination that would not recognize defeat, and kept on fighting even when she saw defeat was inevitable.

Don't give up.
I know you've made a thousand attempts to reach your goal, but look at it this way: after repeatedly banging your head against the wall, you ought to be numb enough break through this time.

It is easier to forgive an enemy than a friend.

We believe at once in evil, we only believe in good upon reflection. Is this not sad?

It is not because a thing is difficult that one should give it up, on the contrary, the more a thing is difficult the more determined should one be to succeed it.